Planning on making a leprechaun trap for St. Patrick’s Day? Here are a few ideas for making your own leprechaun trap that kids can do mostly all on their own! It is believed that when you trap a leprechaun, he will have to tell you where his gold stash is hidden in return for his freedom. Leprechauns are tricky fellows, so you must be creative and tricky when deciding on a way to try to catch him. Take a look at these cool diy leprechaun trap ideas for inspiration.