I've printed a device to allow my wife to squeeze cream from a tube. The tube is a plastic medical syringe and the cream is a prescription given to her by the doctor. I've just made a little clamp and a plunger pusher, it in no way touches the cream or contacts the area being treated so I think I'm fine with the medical restrictions. The tube is to be used over five days, each day they want a 10ml dose to be rubber on her skin.
This piece was made in two parts as the need for the second part did not become obvious until she had to use the first part and that required three hands and I don't want to touch that stuff.
I'm sharing all the models in case someone needs this or can make life easier for someone else please use it.