This year I've added a little twist to my seed bombs by turning them into ornaments to hand out as Christmas presents. Here is what you'll need.  Materials: 1. Clay for moisture retention and structure. You can use Crayola self drying clay or potters clay found at most local craft store. 2. Compost to provide nutrients and moisture retention {Even from your own compost pile} 3. Seeds for the plants themselves. {Head to your local nursery and pick up some ...