It should be a fairly simple project, I hope for your sake.
I have "ring" type ideas that I want to create prototypes for.
The idea is they will be made out of silicone and will fit over an index finger, for mothers/fathers with babies and small children.
I want all rings to be 1.5" long to fit over about half of someone's finger and 16-17mm in hole diameter, which is about a womans 6-6.5 ring size.
1st ring - will have a pacifier shaped nipple protruding outwards, if you can change color to specify material change, that would be awesome.
2nd ring - will have a rectangular rounded edges, thin piece of plastic with a wavy complex protruding. Maybe 1/2 the length of the ring (centered).
3rd ring - will have 6 cow like udders protruding, maybe 5-6mm long