plinko.rodeo Build this: a penny volcano. Arrange coins like a crater on a dish. Put a cup at the core; add baking soda; then add vinegar. The eruption foams over while the metal gleams.
Source:
[url=https://justscheduler.com/coin-volcano-from-sketch-on-a-napkin-to-erupting-reels/]plinko.rodeo[/url]
