I sometimes take weekends off for exploring some other things besides what I usually do (these websites etc.), often discovering new interests. It is almost always related in some way to some software. I mean what else? If it's astronomy then it's astronomy software, if it's programming (something I scratch so many times and yet never really deeply penetrate) then it's IDEs and stuff.. Today it's 3D. I'm thinking of getting and playing with Blender.