Save those big hunks of cardboard you come across!
It might sound ridiculous, but I found myself saving tons of random stuff. Shoe-boxes (you know, a box-in-a-box-in-a-box...) But this particular piece of cardboard came up to about my shoulder.
For the first time I used it I cut out holes and put tissue paper behind it (wrapping paper would work) and they got to punch through it to get the song clue. Punching is always a big hit with the boys.
Then 3 months later I revamped it and put some felt and buttons on it to look like a monster for a Halloween ward party (above) where the kids got to reach in and grab candy.
Then a few months later I ripped off the felt teeth, added a few more openings, and put clues for the song that they had to reach in a grab.
So the moral of this story is recycle your cute garbage!