I made a mistake. I accidentally made my daughter believe her uncle's brightly colored vegan cake was Play-Doh and caused the entire family to do arts and crafts with it instead of eating it!
Oh, wow. How did your brother react?
He was not happy.
You should not ruin someone's cake because they are vegan. If you lie to kids often they might not believe you when it is important. You can hurt peoples feelings if you ruin their birthday.
They are vegans, they love arts and crafts.
They probably love arts and crafts with actual arts and crafts. If you want your daughter to see her uncle, you should respect him and his things.