Vectrex snap-in controller overlay. Print this and apply a controller overlay label to it. Then you can access the inside of the controller without destroying the label. Also, you can quick change the overlay for a custom one for each game. Or you can change the flavor of your Vectrex controller. In my example, I applied a Japanese overlay to it.

It is held down by a tight fit and gravity. A piece of double sided tape could be used to help it stay down better, but I haven't had any trouble with mine with nothing under it.

After printing, let the printer bed cool down completely before removing the piece. This piece can be printed on a Prusa Mini, but it must be turned diagonal.