spook bucks 

Coins, dollar bills, gold bars, or crystal orbs in an immobile state.

Coined in “ Can You Beat Luigi's Mansion 3 Without Collecting Any Money? - DPadGamer”

There is spooky money, which you will find just laying there. Henceforth, these will be known as spook bucks.

spook bucks by MaybeARealWord April 25, 2021