Hannah_G wrote:A simple fantasy for me is hands tied with wrists crossed behind my back.
Do you wish to be free to roam about while your hands are locked, or can you be locked to something?
Are you willing to spend some money to be able to set this up?
I don't recommend any sort of keylock when your hands are behind your back. There is a fair chance that your fingers will go numb and then it could become impossible to work a key into a lock. Even if your fingers aren't numb, fitting a key to a lock can be a lot harder than you might anticipate when you can't see what you are doing.
A cheap/free release mechanism is to put some ice cubes in a bag, pass the neck of the bag through a ring that is secured to something, tie a rope to the neck of the bag. If you incorporate a "ratchet pulley" you can tighten the rope, securing you in place. Release comes when the bag can pull through the ring, giving you the slack you need to separate your wrists. Then you can step through and untie from the front.
If you want to be able to roam about the house while you are tied then there are solutions, but they are somewhat costly. Do a search on "magbound" or "ice lock". These will allow you to lock yourself up securely and have a reasonably safe release mechanism.
I would recommend using four cuffs for this: two on your wrists, two just above the elbows. Tie your wrist to the opposite elbow behind your back. I would recommend incorporating a ratchet pulley in this. Secure one end of the rope to a wrist cuff, pass the rope through the opposite elbow cuff, over to the other elbow cuff and hook the ratchet to the ice-lock / magbound. You can arrange this in front of you with lots of slack, then step through and pull all the slack out with the ratchet pulley. You are now trapped until the ice melts or electro-magnet releases and provides enough slack to step through again.
I recommend keeping a pair of emergency room scissors in a place where you would be able to reach them and cut yourself free if necessary. Hang them from a cord from the ceiling so they dangle about waist height.