Katek
Since they were small all my dgc have loved what they call a ‘snacky treaty’ plate. The older ones are 15 and still enjoy it. Just put out on one plate a couple of rolled up slices of ham (or other cold meat), breadsticks or crisps, cheese, grapes (or other cut fruit) box of raisins, small yoghurt and anything else you think they might like and leave them to it. It’s surprising what disappears from the plate!
This was what my children loved too, including salami, smoked and tinned fish, olives, different cheeses, fruit and veg slices, tomatoes and dips like hummus and taramasalata.
I can honestly say that, once we were past the pureed or mashed food stage, we all ate the same food together at every meal.