An invention that should be made

A good invention gives you the possibility of making a million dollars. I would like to see someone make these this.

1. A solar powered cell-phone

If you have the ability and know-how go ahead and take this idea and run with it. I'm sure people are able to make this item with todays technology. Do you have any ideas for a good invention?

Ideas for inventions

A beeper for dentures, like the remote beeper people use to find their car keys. In hospitals and nursing homes, people are always losing their dentures and they can be expensive to replace