So what to do? Hmmmm?
My students love to build things and throw stuff so let's put both together! Now, for the green part. Let's see if we can make something that is recyclable and fun! Looking around the classroom, I see lots of cardboard (used shipping boxes) and a good supply of Elmer's glue. So, with a little help from Autodesk's CAD program Inventor, I whipped up a nice little Catapult (Hence "CAD-A-Pult").
Next, to obtain more cardboard, I put out an email to other teachers in my school for boxes. Boy, did the boxes pour in!
If you would like a copy of the plans, information on how to obtain them free of charge is listed after the assembly instructions.