A towel is about the most massively useful thing an interstellar hitchhiker can have.
Just before astronaut Tim Peake went into space, we had a chance to send a little something up to the ISS for him to open when he got there, as a thankyou for being involved in the 2015 CHRISTMAS LECTURES. This is what we sent.
Imagine the 11th Doctor trying to calm you down whilst having a panic attack during a weeping angel invasion.
Y/N: WHAT ARE T-THEY?!
Doctor; weeping angles do NOT blink got it?
Doctor: they will move faster than anything you’ve ever seen , one blink and you’re dead!
Y/N; … *you begin to have a panic attack*
Doctor: o-oh. Right nobody panic!