It's gotta be the typewriter table. I process in a bathroom, so I wheel the enlarger in on a typewriter (you remember those?) table that slides right over the commode and fits just between the wall and the sink. For 6x7 and smaller I have a Paterson/Philips enlarger, and for 4x5" I use my Tech V with a Graflarger back on a copy stand, because a real 4x5" enlarger won't fit in the space. On both baseboards, I have a second set of rubber feet to fit the small area of the table.
In some respects, this is an elegant solution, but the copy stand baseboard is really too small for my 11x14" easel, so I have to use a board under it, and the floor isn't really level, so I have to use a rubber wedge to keep the table steady.