I got a Fredorch but it came with a chinesium dildo and all I have is a Neo Elite and a small Mundir. They're both way too floppy to use on the machine, they keep slipping out of place.

Does anyone have any recommendations? I can deal with the small Mundir easily, so something around that size or slightly bigger should be good. I don't mind it being human or fantasy, but ideally it'd have vac-u-lock.