Although these little guys look good enough to eat, DO NOT EAT THEM! I made a set of rainbow-colored thumbtacks that look just like the real thing. I used a small amount of resin and a silicone mold from the craft store to make these thumbtacks. They would make a great back-to-school gift for a teacher or to bring some fun into your dorm room this fall. Get the full tutorial in my newest post for Resin Crafts.