Reddit mentions of California Exotic Novelties Nipple Clamps, Weighted

Remote Vibe First one was DOA, but the replacement worked wonders.

Also just in case you're curious, here's a bunch of other things I've bought off of Amazon:

Rabbit Vibe: NO, breaks too easily

Dual Bullet: Great while it lasts, but sadly breaks after a few sessions

Scissors If you don't have some GET SOME

Two Knotty Boys I highly recommend if you need some knot help

Condoms More are always useful to have

Weighted Nipple Clamps LOVE THESE, your sub might not though

Whip Going strong for two years

Bullet Held out for a while but ultimately broke after a few months

Numb Throat Spray doesn't work

Anal Trainer Set good for training but the middle to biggest is a bit of a jump

Lube Great stuff, lasts a while too

Blindfold Very comfy and durable

Bondage Tape Works well for hte purpose, doesn't adhere like Duct Tape, perfect

Vibe Fantastic Vibe

Rose Petals Show your girl a good, romantic time

Suction Dildo Get it and make her fuck herself on the floor, highly recommend

Butt Plug A good intermediary between the large and medium from before

Mouth Wash Make sure your breath smells clean for sex

Pillows Sleep better

Mini Massager Works reasonably well

Rose Gold Heart Necklace Classy way to show ownership out and about

Rose Gold Heart Bracelet Sams as above but for alternating days

Okay that's a quick overview, let me know for more detail on any, yes I have have bought all of these on Amazon, Dear God I did not realize how much I bought there before now.

Also here's a fun list of tasks and punishments

Fur further ideas just look over this sex map and for a bit more utilitarian, check out this list of Limits I made (pdf version or .xlsx version i.e. excel). For some fun orders steal some from the Contract I wrote (Word Version or pdf)