DIY Shrinky Dinks from #6 plastic. Most clear containers at salad bars or delis are #6 - just look for a "6" inside the recycling arrows.
Excellent DIY tutorial on how to make your own shrink plastic (a.k.a. Shrinky Dink) from recycled #6 plastic food takeout containers. Great way to make your own inexpensive jewelry (i.e. earrings, rings, pendant necklaces). Cheap kids craft too. Have them draw a design on it and make into to jewelry for mom. Lovely Mother's Day gift idea.
DIY Shrinky Dinks ~ good activity that can be done any time there is extra class time; kids take shrinky dinks home to bake