We made these buterflies last week using this tutorial from the Sycamore Stirrings blog. It was very easy since we had just about everything on hand. Addy wasn't too into it. She hasn't been in a crafting mood for a while, unless it's fingerpaints and she gets to paint herself brown... silly girl.
So, now these hang in her room by masking tape. (We have plaster walls so there was no thumbtacking them into there.) I think they are pretty neat if you as me. I love the girls' room. I wish my own was as cheery when I was growing up!