Partial-body bathing is one approach, when showers are not available. Some freewheeling artists in San Francisco talked about this approach. You just take a couple of minutes to do a body part at a time. At a party, for example, it isn't too uncommon for people to spend several minutes at a time in a restroom. So while they are in the restroom (a 'normal' activity), they just use the sink and do partial-body washes. One trip it might be the trunk. Another might involve a leg or two, or the arms. Another might be the head. The feet might be on another stop.
These can be combined with conventional trips to the restroom; and it's still possible to stay well within reasonable time limits this way.
It seems that there is, or at least can be, something of an art to sink bathing, and partial-body sink bathing. Any ideas? It seems possible to get more and more efficient at it (or do more with less time), and this could be a useful skill to have on tour.
Sprinklers? Hoses? Creeks? Rain? Hot springs? Lakes? Puddles? Water jugs? Churches? Fire stations? Snow? Ice? Oceans?
Ever heard of, tried, or imagined anything unusual?