I need an idea for predicament self bondage please

Ok so I'm fairly new to the self-bondage scene but I'm quickly falling for it, in particular the predicament self-bondage scenarios. The biggest problem i have is inexperience leading to a lack of imagination as to what I could put myself in or through. Never been bound by anyone nor myself but have wanted to now for at least a couple of years now. Anyway here is my question to y'all. Can somebody help me come up with a good self-bondage predicament scenario? While I am new to the scene, I do have a few toys. Those toys include: 

Plenty of rope
Ankle, Thigh, and Wrist Leather Shackles 
Male chastity cage
Pad locks
Enema kit
Time-release lock
Butt plugs (1 larger & 1 small)
Suction cup mounting dildo
Thrusting prostate massager 

I'm not really interested in public humiliation but just about anything else is on the table. Thank you so much for any ideas you can give me or just the time you took to read my request. Have a good day!

A good scenario to start is to lock yourself into a position like a hogtie using your padlocks and shackles after putting the key to your release in another room a decent crawl away.

For backup you can put a key in a bucket of water on a table where you start (or midway) with a rope you can pull so you can get out early but you'll make a mess, also use the time release on a long timer for double backup.

Your toys can keep you busy on the way to the key.

I'd always recommend reading through the real self bondage sessions that @Anne, myself and many others have posted.

There will be lots and lots of inspiration in there, alongside warnings and cautionary tales - these are just as important, especially if you are just setting out on your self-bondage adventures.

Learn from what others did wrong, just as much as from what they did right.

Play safe

MJ

Depends on what kind of decision tree you want. How many ways for it branch off, how each branch branches off more (if you're looking to add complexity). What do you want the predicament to make you choose between? Time, discomfort/pain or something else?

You could do a time-based one where you have 2 ways of getting free and one takes much longer than the other but has some sort of drawback. Maybe cover the floor in legos for the shorter one (wear a blindfold so you can't easily kick them aside to avoid them) and start with a full bladder to give urgency.

Or you could do a strappado but instead of tying to a fixed point, run it through a pulley in the ceiling with a large counterweight to pull your arms up. Not so heavy that you can't pull it back with some effort but heavy enough to pull your arms up if you relax in any way. Stay in the position with relative discomfort that only grows over time because of the constant pulling force from the counterweight. Straighten up a little to relieve the strain on your shoulders while straining your arms to keep the counterweight pulled. If you want to really make it interesting, add nipple clamps that are attached to weights on the floor that you have to lift in order to straighten up enough to ease your shoulders.