Desired features:

chilled water

hot water

small double sink

fresh water tank

waste water tank

Chilled water options:

ice

small refrigeration unit

circulate water through a small radiator with a fan.

Hot water options:

electric kettle

boil by the pot

draw engine heat somehow

black water pipes on roof with pump

on demand water heater

Sink Options:

camper sink, stainless steel

plastic camper or mobile home sink

full size single sink

Water Tanks:

limited to 5 gallons for weight

stored behind wheel arches in otherwise wasted space

vented

quick disconnect hoses with cut off valves

No Shower:

too large and messy.

can wash from the sink

Gym membership.
Desire