We as pixel artists have a very small rate of influence on world economics, but we can interpret our surrounding reality and express it in pixel art.
Let's imagine a game protagonist suffering the effects of inflation, and let's help them by making coin powerups, or money bills, or - if you find yourself very inspired and creative - any other physical means of payment, historical or fictional.
It need to be recognisable as a game powerup/collectible item; it needs to be recognisable as a physical currency, and it need to be at least delicately animated, whenever it is just levitating, spinning, shining, or dissaperaing after being picked up.
Canvas: Exactly 32x32.
Colours: Max 7 (including transparency).