3D printing is a great way to make specialized assistive devices. You WILL need to find a friend [or a company] who can use 3D CAD. Start with your 2D sketch in PowerPoint [or equivalent], and then email it to your friend. When they are finished, send his/her 3D CAD rendering to a 3D printer. And Viola! [I had my caregiver assemble the parts]. It takes time, but you get exactly what you want.