That would be an idea for chastity:
you forget and overlook the key for the chatity device for 2 or 3 days. its completly visible, but you don´t realise its the key to the cage.
After the time, you can see and use it again.
If you want to be out of it earlier, you ve to do something painful like wearing nipple clamps for a time
Greetings
Fatimah