Chastity games

Wondering what people use to decide how long and when they stay locked. I've got a ksafe that works on a timer for up to 10 days (and I'm a D&D player) so I've been wanting to do 1-10 days locked decided by rolling a d10 then rolling a d20 to decide if I get an orgasm (only get one on a 20).

I also like to use real life events as triggers like ordering something online and not being allowed to orgasm until it arrives.

There was also a website I used a while back where you used a combination lock box for your keys, set the code randomly and took a photo of the combination before you messed it up without seeing it. Then you uploaded the code to the site (again without looking) and people could vote to add or remove time and you could play casino style games of chance and bet time. That was fun!