I will get uuuuuu!!!!
How to build The Hole
You need duct tape, a box about a foot by a foot, a two foot string, a fake tree, a pulley, and a little sign that says underground orange farm.
How it works
The first thing that needs to happen is for the Leprechaun to get into the Underground Orange Farm. Aka the box. What happens next is the Leprechauns weight makes a nearby rock go up the pulley which makes the box fall in a hole about five feet deep and one foot in diameter.
My hypothesis work it can catch a real life Leprechaun with a pulley!