My Grade Ones have been studying the symbols of Canada and I had them design a new Canadian coin to make out of clay. A couple of years ago when we hosted the 2010 Winter Olympics here in Vanccouver I did a similar project, but we designed Olympic medals.
I have been collecting stamps at Michael's on a regular basis. You can't beat $1.50 for a rubber stamp (and sometimes I get them even cheaper!) Amongst my collection I have these wonderful Canadian themed stamps:
I do have a few others but the designs aren't suitable for imprinting in clay.
After looking at the similarities between all our Canadian coins we decided they all neede a picture/symbol, the word Canada, and a value. Student used small letter set stamps for the words.
We fired the finished coins once and then painted with metalic acrylic paint - which got many ooohs and aaahs!