I've seen these around and I liked them so I designed one. This is a 2x2 key switch fidget. It's a derivative of my 2x1 fidget. Any cherry-like key switch will work. They snap right in. There are two keycap styles. One has a shorted stem which allows the keycap to sit lower on the switch and aligns with the top of the housing. This one needs to be printed upside down. You will get the bed texture on the top surface.

The second is an alternative that has the stem the same height as the keycap. This one sits a bit higher on the key, but can be printed right side up. This may give a better top surface.

There is a ring hole for adding a keychain.

I've used these as an example: https://www.amazon.com/gp/product/B07CVQ8NGR/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&th=1