Eyedropper lid opening helper

This project is a 3D printed disposable mold for polyurethane rubber. The rubber thing is the final product.

My friend needs to use eye drops. The eye drop cap is quite narrow and tapered. It's difficult to remove because you have little grip. That's why I invented this thing. It's a polyurethane rubber holder with a tapered hole. You slide it over the cap and squeeze gently. The cap comes off very easily this way.