A "gumball machine" is a small vending machine usually found in stores or public places. It dispenses small round candy called gumballs when you put money in and turn a handle. Full definition
If Duchamp could claim a urinal as modern sculpture, why question Thiebaud's paintings of gumball machines and cream pies» (Tsujimoto, 36)? (allanstoneprojects.com)
Decorate with gumball machines, giant lollipops and cotton candy, similar to a Candyland theme, or try a modern woodland theme, like this Hansel and Gretel party from Hostess with the Mostess. (thespruce.com)
It also has what looks like a giant gumball machine at the main entrance of the convention center. (theverge.com)