Depending on where I am at and what I am sewing on. All of my machines in the house have cabinets: Singer 500A, Singer 66 Red Eye in a treadle, 1963 Kenmore Model 43.
Out in my studio I have a central quilting bench with wooden plates that I can change out to fit which ever machine I want to use. And it is my central treadle (all of my machines out there are treadled)
Billy