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What about a way to hang a "camp shower" bag above the sink so you'd have warm "running" water for dishes and food prep? That's what we did in our tent in Bosnia back in '96.
We just use the spit bath method (wipes and/or a bucket of hot water and a wash cloth). It's makes you very appreciative for a good hot shower when you can get one.
The shower was used for the "kitchen" sink--for the shower we had a 55 gallon drum that they added a spigot to and then used a cattle water tank heater in