While few people are lucky enough to face the issue of how best to clip their nails in zero gravity, this video of Commander Chris Hadfield demonstrating his technique is a great reminder for everyone that containing and disposing of nail clippings is the way to go.
You know, if I was inside a tin can orbiting Earth at 17,239.2 mph, I'd be biting my nails constantly so there'd be no need to clip 'em!
I was amused by the idea that they will "vacuum" the air intake duct later . . . in space. Do they just hook up a hose to an outlet port, or will that create dangerous space debris?
http://www.neatoshop.com/product/Smart-Clip-Ultra
http://www.trueutility.com/pocket-tools-store/true-utility-nail-clippers-TU36.html
http://www.amazon.com/gp/product/B000G647YS/ref=s9_simh_gw_p200_d0_i2?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-2&pf_rd_r=193Z0HX0R993KASFPPY8&pf_rd_t=101&pf_rd_p=1389517282&pf_rd_i=507846
It should also be possible ot add a little sticky tape to a conventioal nail clipper to catch the clipped nail fragments.