Slot machines and dicing I like to do when I'm bored.You don't need to use your brain.Just his the button and wait for the results.
On the weekends I do some sportsbetting.Mostly football.The big european leagues always offer some nice games and odds to make some good money.However this requieres to analyse several stats which can be a bit of time consuming.But it's worth the effort if you pick the right games.