Nice wallpapers indeed
I did/am doing something similar
I have generated a series of images of kanji to be used as wallpapers, the images are not very fancy, very utilitarian in fact. But it has ON and KUN yomi and the meanings. I will add stroke count and other info later. Also, I found a program to cycle the images every few minutes so there is always a fresh kanji wallpaper.
I use an Access database and VBA to generate the images from edict kanji list.
See attachment sample