I remembered a product mentioned in the Fetish section of Wired, many years ago, that cited a use-case tailor-made for this. Just found it online [1]; it's the

I remembered a product mentioned in the Fetish section of Wired, many years ago, that cited a use-case tailor-made for this. Just found it online [1]; it's the second item in the article. It reads: __ Action Painting __ Paintball is war, pal, and it demands decisive action, like firing 62-mm paint bombs that turn a 75-foot area into a Jackson Pollock death zone. This bipod-mounted mortar can shoot up to four rounds per minute from its 4-foot aluminum barrel, with consistent aim controlled by traverse and elevation-adjustment screws. The M1A's cardboard-jacket shells contain 20 ounces of nonlethal, water-soluble ordnance in a thin urethane casing that explodes harmlessly on impact. Back in the urban jungle, the 46-pound, CO2-powered cannon doubles as an effective billboard-liberation device. [1] https://www.wired.com/2000/03/fetish-127/ https://www.wired.com/2000/03/fetish-127/ Edited to add the words "that cited a use-case tailor-made for this".