We do lots of painting and stickers, but don't experiment with sticking things down much. I got some pompoms to go in gift bags for Miss 2's birthday party and thought that we could incorporate these into some art. I watered down some PVA glue for the girls to paint with (it's a fine line between too gluggy to paint and too watery to hold the pompoms).
Miss 2 liked sticking on the pompoms. Miss 2.5 liked painting. Everyone was happy!