This is a basic grip I created for the Nintendo Switch Joy-Cons.
The girps should print fine at either .1mm or .2mm layer height and the joy-cons slide in easily. The light wholes are functional but are fairly dim.
These finish pretty nicely with some sandpaper and painting. I've had a lot of fun customizing them.
No supports required just make sure to print it standing up straight.
Please, see my Etsy shop for ordering printed copy: https://www.etsy.com/listing/629335263/nintendo-switch-joy-con-holder-grip?ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=3d%20printed%20switch%20joy-con%20grip&ref=sr_gallery-1-1&more_colors=1