Bluegrass (and other styles) mandolin at the moment. It requires no Internet connection, runs for hundreds of years strictly on power supplied by the user's hands, never needs updates (key word being needs), and there's a whole community of fellow users who get together regularly (which, ironically, is why I need an RV full of tech gadgets for festivals).

It's my low-tech break for the day. I keep one in my office for the occasional riff between builds.