Anyone have any good ideas for a kinky bondage device?

Hers two i came up with.

The sub stands in a gunge tank with a collar and leash on attached to a switch on the gunge tank. When the collar gets pulled tight it releases the gunge over the victim. Speed things up a bit by teasing them with a vibrator.

The sub has a pair of high waisted dildo pants on with tubes going into the pants front and back connected to a high pressure pump. If the sub moans over a certain amount of decibels it sends high pressure custard into the pants.

Look forward to hearing your ideas