When I first started teaching there was a very laid back, popular drama teacher who decided everything with a dice. This was in the 70s before technology, He would write six things on paper next to the drawn dice dots and then roll the dice. It was bizarre but it worked for him and his classes often used to use a dice to make decisions. Never a behaviour management problem and never a student stuck for what to do next. Dice-ider is an electronic version of this where you can fill in your six choices and roll the dice electronically. Their advertised choices are a bit silly for student use in my opinion and it’s a pity they did not just steer clear of what could be deemed unseemly. The app itself, from Google Play or Apple store, runs well and looks really nice. You can also use Dice-maker lite and have a template for making a real dice.