I'm still waiting for someone to invent an anywhere charger.
   I've had the idea for years; just yank the ions (electrons
   looking for a new home) from whatever's around it (air, water,
   your shirt pocket) and do a constant trickle charge.* Even your
   hand while you're holding it.* It would probably tickle... but I
   can't see any reason why it wouldn't work... and it would give a
   nice home to all of those poor ions just scurrying around their
   homes, bored... looking for some purpose in their little
   electron lives.