Elmer's glue suncatchers my aunt used to make with my cousin when she little. I had been trying to think of something colorful and a little translucent we could make them with when I noticed some pretty and bright drinking straws at the grocery store.
Here's what we did:
First, we filled a yogurt container lid with clear Elmer's glue. You can use the regular opaque kind also, but it won't be perfectly clear when dry. (Even toddlers love squeezing the glue bottle)
Then we cut up the straws into little pieces. (Be prepared for the straw pieces to "jump" around when you cut them. )
Set to dry. It will take several days, maybe even a week, to harden. Pull the suncatcher out of the plastic lid. It may curl a little after you take it out. If so, you can put it under a heavy book for a couple of hours to flatten it out.
For another drinking straw activity, try using them with playdough!