I picked up a very very cheap hand squeeze flashlight. It is a dynamo type you squeeze the handle and it generates a charge to power a pair of LED's. It is NOT easy and you have to quickly keep squeezing it to get any light. The moment you stop, so does it. No capcitor or anything to charge. You want light, you're going to have to work for it.

But the package description on the back is priceless! I never knew using this flashilight would be so good for my "brain memory and health composition" ! Wow! All by simply using a device meant to 'generate electricity the function elucidation of flashlight."