A towel is about the most massively useful thing
an interstellar hitchhiker can have.
Use it to sail
a miniraft down
the slow, heavy
River Moth
Wave your towel
in emergencies as
a distress signal
Sleep under it
beneath the stars,
which shine so
redly on the desert
world of Kakrafoon
Wet it for use
in hand-to-hand
combat
Wrap it around
your head to ward
off noxious fumes or
avoid the gaze of the
Ravenous Bugblatter
Beast of Traal
And if it is still clean, you may use the towel to dry off.