DJ Cutsman is a pretty good chiptune music maker. Some of it is more relaxing than other parts though, so it might be advantageous to create a custom playlist. Also: Get the Wii U grooves album, very chilled out.
Seriously, Maybe it's the fact that I don't dabble in chiptunes too much, but I've never heard of this guy and it's awesome. He does a pretty rad Deadmau5 cover too!
I recently starting listening to the fez soundtrack, by Disasterpiece, while I'm at work. It's just soothing and engaging enough to let me concentrate and get into a "zone." Does anyone know of any similar artists or albums?