Kinda like playing music in the background while puzzling over something, I like to have idle-browsing media for when I just don't feel like doing what I force myself to do.
For example, I have a tiny python script that grabs a math problem a day from the probability section at mathforum.org and a section from the history of ideas, both of which become part of my daily data pushed to me. For when I want a break, I have been reading around the cisco routing and switching resources and unquality.com.