Easy to use, buy, set up, and weight
Can I catch a leprechaun
I think a lever and an incline plane will trap a leprechaun.
We will put a danger, do not enter in the front sign. Leprechauns don't like following directions so he will do the opposite of what he's told. He'll walk in and see the gold. Then he'll go to the gold. When he's running for the gold, he will step on a soft spot of grass. Finally, he will fall into the hole under the grass and a lever will put a lid over the hole.
I can catch a leprechaun