[kaiman]

The pm dare could be a good way to do something that is out of your control while its on and that you can turn off/on easily. Other ideas:

Locked - and you put on your cuffs untill someone sends you an unlock pm dare

Unlocked - they need your hand to jerk them off and so your handcuffs are removed, but you'll have to jerk off the syringe and have it cum on your face

Rape - and you ride the dildo where the darer says or find a way to suction it/ lock it into something so that you can also do with handcuffs on. No hands allowed.in any case

Same thing for cuffs could be done with vibe. Other decide via PM dare both when to put it in and when to raise. They can also shut it off to get something nice that they could not otherwise, like a spitroast or do. They need your pussy free for that and so they remove it