What I do with a spare ten minutes:
(But then ten minutes can be a euphemism, as in "I'll just be ten minutes" - translation: "Go away and stop hassling me for a bit.") Application of hot water usually helps.
Here's another favourite ten minute idea:
Many years ago, I had a 70km commute to an early start at a job I didn't like much. Most mornings, I built in ten minutes to my schedule - and I planted something before I left. A seedling, or a handful of seeds. In a pot or tucked in the garden beds. I felt that even if I didn't like where my time was being spent, at least the seeds were in and growing every minute of that day. (And I ended up with a packed garden plus a house full of flowers!)
This meme was brought to you by the lovely folks Handmaiden (love those clocks!), Hoppo Bumpo, who suggested the theme, and Three Buttons, who started it all off.