Even if you can't get to a shower regularly, KEEP YER CROTCH CLEAN! Go into a bathroom, lather up a paper towel, and scrub and rise that shit. Crotch rot is nasty, uncomfortable, and easily preventable. Plus, afterwards, you feel like a million bucks. Same goes for your feet.
I think it's sort of funny that this is a semi-heated topic.
Anyway, I am in full support of bird-baths!!! (like described above)