Leprechauns carry pots of gold with them.
$0. They are not real!
A pot.
leprechauns carry two pouches
A shillelagh
Leprechauns
It's an Irish myth that if you find the end of the rainbow, they give you that as a prize.
Since leprechauns don't exist, you can call them any color you want. But they are usually depicted by artists as having normal skin tone, but commonly wearing green clothing.
The actual saying is 'speak softly and carry a big stick' versus 'walk tall and carry a big stick.' The saying is attributed to Theodore Roosevelt.
You call it "the end of a stick". There is no technical name for it.
A big stick was his recommendation as something to carry to a negotiation.
Leprechauns have magic, but leprechauns aren't real (As far as we know...)