You never know, some people go to extremes. One fork, one toothbrush, one sleeping bag, one laptop, one credit card, done. Toothbrush doubles as a shower brush and credit card is used to scrape off water instead of a towel.
Of course, the shower isn't yours so it doesn't count. Using this, we can get rid of the sleeping bag and just roll up the carpet in the rented flat and sleep in that.