Viviane Schwarz is using a bingo wheel to get stuff done. Throw in the projects, spin, and pick a winner. Set a timer and work on it for that amount of time. Rinse and repeat. I like it, it’s chaotic and just a little bit insane. She explains further in her The Setup piece:

It sounds quite ridiculous but it beats every other system I’ve ever tried for productivity; you just have to make sure the right balls are in the cage, throw in more if a deadline is approaching or take some out if something gets less urgent. Statistically, as long as it all gets done on time, who cares what order it happened in?