I couldn’t find a model that only had the accessories for the two sides of the joystick, so I made one myself.
My controller is stored on the Switch console; these things are just left there casually.
I used the size of this model.https://makerworld.com/en/models/23441#profileId-232420I suggest you take a look at that too.
PS: After I made this model, he made another one for me^^ If you want to use them both at the front, you can use his model.