I just saw a review of a neat product in the Chicago Tribune: the WalletPix. It is a small, thin handheld device that allows the user to display up to 58 photos.
The idea is to give this to parents or grand-parents who don't have a computer or are technically challenged to the point where they can't download photos from e-mail etc. You upload the photos with a USB cable from your computer and that's it.
The WalletPix runs on 3 "hearing aid" type batteries and is an updated substitute for the practice of showing off your children and grand-children's photos.
The cost is $30 and the WalletPix can be purchased in most national drug stores like Walgreen's, CVS, etc.