Taking notes from circuittree's model https://www.thingiverse.com/circuittree. I decided to make it more like something I would use. I added a place for the crevice tool to rest on. I also created on the opposite side a place to attach the standard tube (and you can keep the floor brush attached), or attach the floor brush directly to the mount (on a slight angle to keep the standard tube attached to the vacuum unit). If you have a 220x220mm like I do, I sliced the tube mount off with some of the base connected. I glued the pieces together with Weld-on 16 and it has been rock solid!

Anycubic Kobra 2 Overture PLA 0.4 nozzle 0.2 layer height 2 Perimeters 40% Infill (probably overkill, but I wanted it pretty solid)