So there's this guy on Youtube, his channel name is NSFW Machines. He has a lot of good build guides for milking machines, including one that shows how to buy a Venus receiver (about 40 dollars) or make your own for very cheap, then use a pneumatic cylinder and hoses to milk yourself manually. I did buy a receiver and got it in the mail today. I have a cylinder coming and plan to attach it to an electric reciprocating actuator like the ones you can find on Aliexpress for fifty bucks, but I tried it out with just a 100ml syringe and some suction tubing. It's amazing. Yeah I have to work for it a little bit, but I've never experienced anything like this from a toy. It's worth noting that I use a thicker lube that is a combination of J-Lube, Xanthan Gum, and vegetable glycerin.