Two Crotchrope Videos
Topologist
Just posted are two videos on crotchropes -- one on a basic crotchrope you can wear out on the town, and another on how to use a crotchrope to attach a Hitachi Magic Wand for hands-free (or hands-restrained) vibrating.
It's really hard to overstate how much fun can be had with a simple crotchrope. On one recent occasion, I tied one on a date before going out to a party we thought wasn't going to include play; later in the evening when it did wind up turning into a play party, we didn't have any toys with us, but the crotchrope was just long enough to re-use to tie her hands up for a quick and very hot scene.