Here's a model I put together to parametrically make some footswitch toppers for my floorboard. These will be able to fit pretty much any footswitches that are out there (HX Stomp, Morningstar, Kemper etc…), just measure them, fire up Fusion, put in the diameter, adjust some other parameters and you're ready to go.
If you dont have Fusion360 or don't want to mess with it I included 2 versions with 8.85mm inner diameter and 10.08mm, the smaller ones will fit the small footswitches found on sth like a Morningstar MC6, the bigger ones will fit Helix or Kemper Footswitches.
Feel free to share your makes, comments and questions!