I cut my own hair using my "take a look" mirror mounted on my clear cycling glasses. I'm sure any hair professional would cringe, but it looks good and it's free and everyone complimented me when I did it the first time when I cut 3 inches off (it's a bob with little layers).

I also use my multi tool for many non-cycling related projects around the house... seems we have lots of uses for metric allen wrenches for some reason.