GG, Cheap as Chips and Sam's Warehouse usually have a pretty good offering of random crafty things, usually fairly cheap.

I haven't done much craft with DD2 - but she often comes home from FDC with things like a paper plate cut into a mask with streamers stuck around the edge (lion) or a fish with circles of sparkly paper glued on, flower pictures with coloured patty pans stuck on, etc.

Keep an eye on playschool in the mornings, they have lots of quick and simple things - esp if you keep a box of bits (cardboard rolls, small boxes, etc) handy.

Only do glitter if you're feeling brave - glitter glue is much less mess LOL.