Mr. McGroovy’s Box Rivets are plastic rivets designed to make it easier to build with cardboard boxes. They’re stronger and easier to use than traditional cardboard box building methods (i.e., duct tape). McGroovy’s site also features plenty of plans for cardboard box creations like this castle plan.
Megos are some of the most sought after action figures — damn I wish I still had my Spider-Man Mego. For me, Megos always rocked because they produce awesome superhero themed cars. That, and the awesome Star Trek playset.