Supercharged Superglue
We can't explain the science behind it, but if you mix baking soda and super glue, it will turn into superglue's plastic-form brother. This handy little concoction can be used to plug holes and seal gaps as well as repair collectibles and other odds and ends. Just put a small dab of superglue on the surface, add a bit of baking soda and press it on with a cloth. After just a few seconds, it's good as new!