Trying to come up with a couple activities / games for my daughter's 4th birthday. We're inviting her whole class, so it'll be a mix of boys and girls. Kids will be around 3.5 - 4.5 years old.

One craft idea I had - have the kids decorate foam crowns/tiaras like these (http://www.amazon.com/Princess-Tiaras-Crowns-Dress-up-Accessory/dp/B001EEV9QU/ref=pd_sim_201_6?ie=UTF8&dpID=41VL%2BALnaNL&dpSrc=sims&preST=_AC_UL160_SR160%2C160_&refRID=06E2644ZGZKCWDEMN10Q) with adhesive back "gems," stickers, etc. I know my daughter would love this, but would the little boys like this too?