I wanted a wider, more comfortable, controller so I made my own. It prints in 6 parts that fit and Ender3 bed, then clips/screws together. 

Needs an arcade stick kit off Amazon/Aliexpress/whatever.
Needs M6 threaded inserts and screws, or glue I guess. It's probably okay to screw through the plastic as well.

Print models oriented with the most flat side on the bed (duh!).
On my print I've added fuzzy skin on some of the outside walls

Random partial assembly footage

OnShape CAD model here it's a mess, sorry!