In my childhood I really enjoyed my mittens. I had a pair that was attached by a cord. This cord would go through your sleeves and made sure you would not loose them. I needed this badly because I always lost everything.
What to do if you still like mittens but do not want to look like a child? For $25 you can buy this pair of vintage WW2 Ski Mittens. It comes with a metal adjustment buckle and the inside of the palms are made of leather. It looks cool and kinda matches my cameraman jacket.