My three year old grand-daughter loves her battery powered games and toys. Unfortunately, she's not too great at keeping track of her spare batteries. They fall out of the packaging and get scattered and lost. Then she comes to grandpa -- and all my batteries are scattered and lost, too!
So -- I decided to make her a battery bandolier (think Rambo strapped with belts of batteries rather than machine-gun bullets). I decided I'd use elastic rather than making cloth pockets -- the elastic will keep the batteries from falling out.
The project used three pieces of scraps -- plus about 15" of 1" wide elastic and two 3" metal rings.