Build a digital picture frame. Turn an old laptop into a nice frame for showing digital pictures. If it has a cd rom, have it read pictures from there, if not have it read them from a central server. Option one: pictures are prescaled to correct resolution (ie. 800x600), option two: the frame uses ImageMagick or somesuch to rescale pictures before displaying them. Graphics environments: SVGALib, Xfree86, PicoGUI, Microwindows and NanoGUI, or twin (probably to specialized to work good enough).
Moro MC
http://moromc.dyndns.org/article.php?story=20040105172504606