All 8 kids from small to big loved decorating gingerbread houses. We put all the leaves in the dining room table. And removed the chairs. I put bowls of icing, colored icing in decorating bags and dozens of different shaped sprinkles. Glued to a sturdy plate with icing, each kid iced and decorated their own, sprinkled with dried coconut for snow and took them home.
I made huge batches of gingerbread from scratch, cut them out, baked them and glued them together with melted sugar. Doing it all ahead of time saves worlds of trouble. Those things stay together even if dropped when assembled with melted sugar.
The dogs were on hand to help clean up any dropped bits.
I have the houses baked but not glued yet to do with grsndkids.