So...filthy commune basic rules....first draft; feel free to add your own 
*Spillages of a neutral nature and colour may be mopped up with dirty laundry.
*Items of dirty laundry may be used for dusting purposes.
*Dressing gowns may be used for drying cups and other immediately-needed crockery. Just our own or can we use each other's?
You might not want to use mine, as it is often liberally coated with dog hair...
*Hand washing after pooing and before food preparation please - other times at members' discretion.
I don't always wash hands after peeing either - if no urine or genitalia contacted my fingers, why do I need to?
*Dogs and other assorted animals to be allowed to co-sleep, if desired by bed occupant. Same goes for sofas.
*If it's yellow,
Let it mellow.
If it's brown,
Flush it down.
Can't do this with ours, unfortunately, as it's a very stupid design where you pee on the porcelain, not into water, so it'd smell if you didn't flush.
We have quick flush though. 
*Garden grubby hands perfectly acceptable, as long as not preparing my dinner..
Any more??