SNES Joy-can Grip

I saw this while browsing the inter webs for Christmas shopping - https://www.amazon.com/8Bitdo-SF30-Controller-Windows-macOS-Android/dp/B0748S3GXG?th=1 - and I though “crap, 45 bucks?”. I was very tempted the. I thought of something - I could make my own version, since I’m getting a 3D printer soon.
So this is a cheap version, not as good, the proportions are off, might make a v2 later.