How to turn an ordinary belt into a pair of handcuffs.
First, get a belt! This method of shackling will work with a "rope" belt, but for the sake of the tutorial, it is recommended that you use a belt with a buckle and a loop to take the slack.
While these cuffs are functional, they are by no means foolproof and can be slipped out of with some work. I do not recommended them for actual imprisonment purposes, but whatever else you may think of doing with them, well, I shall leave that up to you.