First…this is untested. I designed it, but I own no Switch and I haven't printed it at all. Just a quick design that someone requested on Reddit.

If I managed to follow all of the reference drawings, this should allow mounting using two screws (modeled to use #8 drywall screws as mounts, but I'd probably use something different since the drywall screws have the curved heads).

Also, I had to use reference measurements of a Switch, so I'd probably suggest that you print only the first few layers to ensure that everything fits.