Glass holder for hands-free drinking

My name is Prasad because of Muscular dystrophy I use battery operated wheelchair ottobock B 500. Muscular dystrophy id degenerative muscle disorder and have lost my ability to drink and eat by myself .
I was looking for glass holder for my wheelchair I could not find glass holder which suited me my friends using wheelchair were also looking for something which could be a hands free drinking solution
My mentor gave me a 3D printer and told me to try this technology . At first I was thinking