A Plea

I mentioned earlier that I will be teaching a workshop to other teachers next week. I was asked to show 30 teachers how to make jewelry out of house hold items and things we might already have in the classroom. The workshop has to last 3 hours. I have a few ideas-
*Pour plaster in bottle caps and create designs.
*Fabric and paper beads.
*Button beads.
I have very few materials and the materials I requested were purchased, and yes, they were all wrong.
Any suggestions?