I should probably post more on here about the thing I spend most of my time doing - writing code.
RSS Image Feed Picture Frame is a little piece of software I finished recently. You give it a list of RSS/tumblr feeds that have nice graphics as their content and it will display a random image from one of the feeds. There is a small daemon which displays just the images full screen and fades between them.
The idea is to run it as a lightweight "picture frame" app for example on a Raspberry Pi powered HDMI screen hanging on your wall.