Tinkerlog has posted a great post about how to build a digital frame that fetches pictures from Flickr. Project is based on Atmega8 microcontroller which downloads image from PC and displays it on Nokia 6100 color screen. Images are scaled to 128×128 pixels with 8 or 12 bit color depth.
You don’t have to worry about connecting Nokia LCD as you can get it from Sparkfun with PCB and convenient SPI pins ready to plug in to a breadboard. The actual fun is to get Flickr images and transfer them to microcontroller via RS232 interface. Images are fetched with ready to use Flickr API, the rest is left to Python scripts that scales images and sends them via serial port. Put everything in a nice frame and it can be a great souvenir on your hi-tech table.