The roka is where both families stop looking, which is what the word means. The tilak is where the men of the bride's family come to the groom's house, mark his forehead and hand over the shagun in front of everybody. Some families hold the two together on one afternoon. Others keep the roka as a quiet lunch and let the tilak be the first proper function of the wedding, and in Bihar and eastern UP the tilak is often the larger of the two. What does not change is that whatever you buy will be opened in a room full of relatives.
The gift is one item on a tray, and that decides what to buy
At both ceremonies the shagun arrives as a set of trays: clothes for the groom, a coconut, sweets and dry fruits, an envelope of cash, often a gold chain or a ring. Nearly all of it is eaten, worn or banked within the month. The murti is the exception. It goes into the family mandir, and it is still there when the couple's first child is born.
So an idol does not replace the shagun and is not meant to. It travels on the tray with everything else, and it is the part of the tray that gets kept. That also settles the question of scale, because you are choosing the thing a household will look at for years rather than the thing that wins the afternoon.
Who you are actually giving it to
This is a family to family gift, and that is where most of the advice you will find goes wrong. Watches, perfume, ties and grooming hampers are gifts for a person. At the tilak the groom takes the gift standing in front of his parents, and his mother is usually the one who decides where it goes, so what you want is something the household would have chosen for itself.
A Ganesha is the most given and the hardest to get wrong, since both ceremonies are a beginning and Ganesha is who you turn to at a beginning. A Lakshmi Ganesh pair is the more considered version of the same thought: it points at the household the marriage is about to create rather than at the wedding itself. The Kamdhenu cow with her calf is the one to buy when you do not know the family well, because it is auspicious without being anybody's particular deity.
Where you do know which deity the house keeps, that beats all three and costs no more. Balaji in a Telugu home, Shreenathji in a Gujarati or Marwari one, Jagannath in Odia families, Murugan in Tamil ones. Nobody outside the family thinks to give it, which is exactly why it registers. For a gift meant for the couple rather than the two families, a Radha Krishna pair carries devoted love, and a pocket temple, a shrine that folds shut, suits two people likely to be in a different city within a year of the wedding.
Sometimes the right gift is not a deity
A roka often brings together two houses that do not keep the same gods, and occasionally one that keeps none. A murti handed into that is a small imposition, however well meant. The decorative pieces do the same work and ask nothing: a trunk up elephant pair, or one of the meenakari birds and animals, enamelled in colour and legible from the far end of a room, which is roughly where you will be standing when it is unwrapped. The same holds when the gift is going to a friend rather than to a family.
Which finish, and the one mistake worth avoiding
The plated pieces are a resin core with a layer of copper over it, then gold or silver electroplated on top, and on some pieces both. The copper is the layer that matters, because resin cannot be plated directly and the copper is what the precious metal keys onto. It is also why these are light, why the detail stays crisp at a small size, and why water is the one thing that takes the finish off. Keep a plated piece dry and wipe it with a soft cloth. If the household is likely to perform abhishek on it, do not give plated.
For that, solid brass is the answer. Ours is poured slowly into a mould made for that one idol and broken open once the metal has cooled, so every casting gets its own mould, which is why the detail holds where a reusable sand mould softens it. It is also why the alloy has to be high grade, since a lesser brass will not fill the shape cleanly, and it is the honest reason a cheap brass Ganesha looks blurred around the crown. Brass takes water and milk, darkens over the years as surface oxide, and cleans back with lemon and salt.
The white and gold Premium Edits are a resin core coated in marble dust, which is what gives them the surface and the weight of marble. The jewellery on them is made separately in brass, electroplated, and applied to the figure by hand one piece at a time, which is why the finish varies a little between pieces. Keep them dry, and lift them by the base rather than by the jewellery. An antique finish reads as considered rather than bright and suits a gift from an elder.
What to spend
Scale it to who you are, not to how large the function is. Guests and family friends sit comfortably under three thousand, which covers most of the plated murtis and the meenakari pieces. Under five thousand is the range for a brother, a close friend or an aunt, and buys a proper brass piece or one of the white and gold figures. Above that, up to around ten thousand, is family to family territory: the large brass sets and pairs meant to be the gift everybody remembers from the tilak. Below about a thousand rupees we are not the right shop, and sweets and dry fruits will do more work than anything small we could sell you.
Where several people are giving together, one properly finished piece beats a collection of small ones. At the same money a smaller well finished murti reads better than a larger plain one, on a table where a dozen gifts are opened side by side.
Tilak, teeka, chheka, kurmai
One moment with a lot of names. Tilak or teeka across UP and Bihar, and tilakotsav where it is held as a function in its own right. Chheka in many Bihari homes, and you may hear barikshan or barrichha used for the same visit. Kurmai in Punjabi families. Roka or thaka more generally in the north. Sagai where a ring is exchanged, which is closer to an engagement and sits with the engagement gifts. If you were invited to any of those, this is the page.
The samagri and the tray decoration are a different shop
Most searches for a tilak items list want the samagri: roli and chawal for the tilak itself, a coconut, supari, moli, a diya, sweets, dry fruits and the shagun envelope. We do not sell any of that, and a local pooja store will do it better and cheaper. What we do make is the thali it all sits on, and the diyas and loban burners that go with it, which are worth having because they stay in use long after the day.
Nor do we sell wrapping or tray decoration. Every piece ships in our own packaging, which is made to be opened rather than merely to survive the journey, and that matters more here than on most occasions, because these gifts are handed over in front of a room and unwrapped on the spot. Every piece is checked at our own warehouse before it goes out.
Ordering, and the wedding after it
The tilak is set to a muhurat and the date often lands with little notice, so order as soon as you hear rather than in the week of the function, since a specific finish is the first thing to become unavailable. Where the two families are giving in matched pairs or in small numbers, the bulk order enquiry page handles quantity.
Most roka and tilak functions are small enough that nobody sends a return gift, and none is expected. Where the guest list does run long and you want to, buy one small plated design in quantity rather than assembling a mixture, since guests compare and a mixture reads as leftovers.
The same two families meet again a few months later, and the reasoning changes when they do: at the tilak you are giving to a household that already exists, at the wedding to one that is just starting.