Sapphic Bondage Ideas

I'm looking for various Bondage-themed RPs, preferably FxF, but FxFuta also being possible.
I prefer to play the sub in these scenarios, but a switch/trade-off scenario is also an option.

I'll share some ideas of my own, but I'll happily hear out any suggestions you might have yourself.

Consensual Kidnapping
MC has a kidnapping kink, which has recently evolved into a desperate need. She fantasises about getting grabbed off the street, or being captured in her own home, about being tied up and dominated.
Actually exposing herself to that sort of thing is far too dangerous, though, so she finds a compromise; She organises her own kidnapping.
YC might be MC's friend, or a professional, or even a relative stranger from the internet, who receives the following offer:
MC gives YC a set of ground rules, a vague schedule about her activities in the near future, and possibly an offer of payment.
She doesn't want to know when, where, or how YC gets the jump on her, she just wants her to make it feel real.

Experimentation (MC and YC roles reversible)
MC is curious about bondage and similar kinks and is tempted to try it out on herself. But self bondage is either unsatisfying or intimidating.
YC is MC's friend or roommate. As MC opens up to her about her recent interests, YC offers to help, leading to them experimenting on each other.