I built one with the squeeze bulb for a powerboat fuel system (unused) and some tubing. The copper tubing spout clips onto a bucket. Always put it right in the path between groover and kitchen, so you'll stumble if you don't stop.
Cute name? How about Wash or You F-ing Die!
I also keep alcohol hand sanitizer at the toilet, and use that immediately post-dump, then wash my hands as well. A fingernail brush at the wash station is not a bad idea either, especially for the kitchen crew. And some lotion for those in need of instant moisturizing.
Maybe that's overkill, but having a big group with belly snakes is worse.
Some folks is naturally clean. Most ain't.