You can just leave the roulette on and do your chores

I found this while wandering around, thinking I needed to level up and collect points quickly. It's rated M for Mature, but it definitely gives good quests, so it's manageable. You can spin the roulette 100 times without touching it and do your tasks while time flies. Sometimes you get a jackpot and need to tap the screen, so I tap randomly after about 10 minutes and then go back to my tasks...