Booth: https://booth.pm/en/items/6958362
Dl: Not found

If anyone has a pack of just male penetrating animations though, message me or something. I might try making one based off lastation's? No promises though, idk how to do scripts or whatever

Booth: https://booth.pm/en/items/7259641
DL: https://forum.ripper.store/post/1106237

edit, found it. holy shit this is INSANE WHATT THANK YOU FOR TELLING ME ABOUT THIS?? DPS FOR QUEST???

edit again: okay, so turns out I think it has problems? I might play around with it but I'll just keep an eye on the thread in the meantime.

edit 3: i messed around with it for a good few hrs (roughly 5 apparently wtf? time flies). so far, haven't really gotten to get it to work properly yet. it's a bit too finnicky for me to really recommend it the same way i did with the others. but to anyone curious, the link to the thread will be here. thanks to kumasmokez.
https://forum.ripper.store/post/1798351

auto hotdog, thrusting dildo prefab. there's a version where you can switch between 5 or so toys, but you have to provide the toys yourself. has 3 speeds. thanks to sloth838383
https://forum.ripper.store/topic/103530/auto-hotdog/3?_=1778770162415

(RKS) or, real kiss system. Makes a bridge of saliva, but it works like old dps where you need an "activator" and lights. I love it though. Thank you, Relerz
https://forum.ripper.store/post/214645

a FREE penetrating tummy bulge without messing with blendshapes or anything, in case your avatar doesnt have blendshapes for bulges. For liltoon. Uses mask/shadows so you will need a photo editor of some sort. Made by yueのbooth
https://booth.pm/en/items/5658430

cum and squirt particles. Not sure if the milk system is in this as well. Thank you lacasaz
https://forum.ripper.store/post/400881

thiccwater, prob the most common one you'll see when people recommend cum/piss/drip particles. Librarynthan has the v.2 version. (TY)
https://forum.ripper.store/post/1608680

LaStation's nsfw gogoloco. most common one if you want an nsfw version of gogoloco. Free.
https://github.com/LastationVRChat/NSFW-Locomotion

Macaroni shop's nsfw animations. Similar to the lastation's thing, but only nsfw animations. I forgot the specifics but there might be parts where the other person can grab and move you? Really cool, but doesn't work if you also have lastation's on as well, so you kind of have to choose between them.
Plenty of variations, but I've only seen one so far. Ty Coopmeisterr
https://forum.ripper.store/post/1594606

X-ray danmen (like, hentai x-ray. you see the inside of the vagina and ovaries n whatever.) Idk the english name. I think it's a good system, but it's annoying how it will add its own vagina sps. If you don't mind messing around with menus or stuff, I'm sure you can work around it. Or just accept having two. Up to you. Unforutnately, the penetrate will look like a pale cock unless you change the penetrator texture asset in the package. I'm too lazy to make an edit for it. Real cool tho. Ty extremesheep
https://forum.ripper.store/post/934283

Free version of above, but uses dps. However, any penetrator with the matching shader will appear in the danmen thing, which is really cool :). But does mean the partner also needs to install it, which can be a bit of a pain if they don't know basic unity. Made by ギャルショップ トムンゴ
https://booth.pm/en/items/4773763

PCS, penetrating contact system. Sex sounds (for receivers), works in tandem with sps, but also works by itself by detecting movement. Very popular. Ty Meulin for v 1.10.0.
https://forum.ripper.store/post/1248838

LMS, LoveStick massages, aka PCS's slightly lesser known cousin. I'm not that into using a penetrator myself so I'm not that familiar with it. However, should be similar to PCS, but specifically for penetrators. Ty to Projectkouki for version 1.4.1
https://forum.ripper.store/post/1532915

More niche and kinky, there's a bathroom bondage system. For those who want to be tied up on top of a toilet. There's a toggle between dirty and clean bathrooms for any germaphobes. Ty to millk
https://forum.ripper.store/post/1775624

PB Handcuff system. Handcuffs that actually limit movement. this originally free (By Yaokisub) but now deleted asset gives you handcuffs : ) Thanks to Ashley_666 for sharing
https://forum.ripper.store/post/739452

Evilfall capsule v2 (avatar). Capsule that lets your avatar go to sleep to be used like a milk cattle or something idk. Really cool fr, if you're into that. There should be instructions as to how to apply it to avatars without prefabs if needed. At least booth ones, not sure if they work with western style avis. Thanks to texyvale for sharing : )
https://forum.ripper.store/post/1132347

Additionally, version 1 of the evilfall is now free : ) They also have world versions for both, if you ever get to that. Made by YaokiSub
https://booth.pm/en/items/5854983 <--Avatar version

Actually, just look at yaokisub's entire store. They have plenty of bdsm assets for free. Most are on page 4. This includes spanking table, X restraints, barpole rest, donkey table restraint (similar to rocking horse basically), etc. and a few free booth avatar things too.

There's also a really cool tentacle box trap, however I found it rather finnicky, esp if you have a looot of other stuff like locomotion etc. If you want to give it a shot, here's the avatar version. Similar to fall, it's possible to make it work with any avatar with the directions. Ty to ThankuKateyki
https://forum.ripper.store/topic/38684/lf-for-avatar-tentacle-box-trap-感官遮蔽陷阱-v1-0/2?_=1778774944001

These are most of the ones I can think of rn. have fun.