I like doing mosaics with beans and seeds and stuff. It can get pretty messy, but it's still fun!
Heavy construction paper, thin wood, or solid material
1. Pick a design (studying Roman mosaics is pretty cool, too)
2. Trace out your design on your solid material with pen or pencil
3. Give each bean or seed a number
4 Assign colors/numbers to chunks of your design
5. Starting from the inside out, apply glue and then place your materials on the surface of your mosaic, being sure to space them evenly and in alignment.