A strong MultiMaus holder to put your Maus to the side when you need to have your hands free or when you have to inevitably stop playing trains to do some so-called 'important' stuff. It has been brought to my attention a holder already exists on Thingiverse where you can still touch the buttons, but this holder is mainly for keeping the Maus out of the way when you don't need it rather than having it hang somewhere during running sessions.