this is one of the best key-chain USB drives I've found. All metal, nothing to break.

http://www.amazon.com/gp/product/B00DYQYJ0E/ref=oh_details_o04_s01_i00?ie=UTF8&psc=1

I haven't paid to cut my hair in over 15 years. All I need is a decent set of clippers and these:

http://www.amazon.com/gp/product/B00AYY1SQW/ref=oh_details_o09_s00_i00?ie=UTF8&psc=1

I check how the back looks by taking pictures in a mirror or having a friend do the final trim in the back with a razor.