You can also choose to redo the activity at the end of each one of their chastity periods until they've "perfected" the skill you want them to know. For example, the first time they give you oral sex, they may only earn a "4." Six days later, you'll let them retry - and maybe they get a "5" this time. You can keep this up until they get that perfect "10." Then they'll truly "deserve" to be unlocked.
This one can be particularly entertaining - and can go on a long time. Just like the standard version of this game, the keyholder is going to hide the key somewhere in an agreed-upon location (such as "within our home" or "within the bedroom"). The chaste partner will get unlocked if they can find the key within the agreed time limit. To make this task particularly fun, demand that the chaste partner clean-up or tidy up any area where they search for the key. You'll get a clean house - and they might get a chance at being unlocked!
Roll of the Dice
As punishment for any bad behavior, you can pull out the dice. Roll your set of dice, and add on that many days of chastity to the count. Use more die (or nerdy D20 sets!) if you really want to be cruel. Your partner will certainly think twice before misbehaving next time. Who knew dice could be such a punishment?
Bonus: Quiz Time!
If you have a locked partner who particularly need to study or learn a topic, this one is for you! Doing your own bit of research, you'll need come up with questions about the topic - maybe 10 or 20 questions. Before the game, agree upon how many days of chastity each missed answer is worth. They'll certainly be more inclined to study next time if you decide each wrong answer means another three days of chastity!
I bet you never knew keyholding could turn into such a fun and playful experience, did you? While you're certainly denying your partner's orgasm, it doesn't have to always be so serious. Consider playing chastity games, such as these, on occasion to keep things feeling fresh. Use these games or take inspiration and make your own!