Assuming consent on all fronts, and some kind of safe signal?

Tickle.

IME that ends up being strangely harder on a sub and something that can go on longer–with breaks!–than e.g. caning, flogs, etc. If you go too long with a silicone slapper, you can take skin off; to long/hard with a cane, and you’re causing hematomas. Too long tickling? No physical harm done (as long as they don’t, say, dislocate a shoulder; be careful with how you tie people up, folks!), although a sub might pee the bed, or be laughing so hard that they can’t breathe. That means that you can turn around and do it again the next day. Combine being restrained and blindfolded with sound-isolating earbuds so that a sub can’t tell where you are, and intersperse the tickling with sensual touch, and you can have a sub dreading your touch, flinching at nothing, and drag it out for an hour or more.

I’d remove the gag though; tickling combined with a gag can obstruct breathing.

(Not everyone is ticklish though. IME people that tend towards anxiety have a much stronger reaction to tickling.)

going to start with a boobie touch

Ur boobs are perfect

Your legs appear to be free, so ask for your consent (gag removed then replaced once the terms of our interaction have been agreed) to restrain them in a position of my choosing. Probably, somewhere up near your head, if you’re flexible enough, otherwise spread to expose your pussy and ass. Then a long session of teasing/edging with any suitable objects at my disposal. You should expect anal and vaginal penetration, and some form of impact play. The gag would probably be removed so that you can suck on my dick while I continue to play with your body.

I’d get myself tied up with you 😍