I have a Sony digital frame that is about 5 years old and it's still going strong. You can load the photos right into the frames internal memory, or use several different types of memory cards.
I have made up several "seasonal" memory cards (Christmas, Easter, Summer, St.Patrick's Day <yes that is a season for us>, Graduation, Back to School, etc) with family pictures from across the years. I add to the cards when I get a chance. The frame sits on a secretary in the foyer - very informal - and I just switch out the cards. It's fun to see the kids and cousins as they grow and change throughout the years.