Don't keep a paperclip handy or forget them all the time?
Can't reset and your batt ends up getting drained?
I just came up with a handy storage idea:
Ok, break off a piece of paper clip (if you were straightening one, the first bit you'd unbend, cut or break it just before the bend) and push it into the jack like so:
It fits in snugly and is always accessable!! With the addition of a bit of tape it won't fall out or snag on anything either.

I suppose it depends on your earphones but any that I own can do this.