This may have already been listed below. But I'd definitely recommend reusing bath towels. They're not really supposed to be single use. After you use it hang the towel up. Bacteria doesn't grow on dry things, so they won't smell if they get fully dried out after each use. You should get at least 2 uses out of a bath towel. I don't see anything wrong with getting 3 uses. As for your other clothes, underwear and undershirts should be washed after 1 use, but everything else can be worn again without washing. Same concept, hang them up after wearing them. That should cut your washing trips in half, at least