Configurable Paint Stands V2

My girlfriend liked the first designs I made in a rush, but I felt they could be vastly improved. I made them taller, easier to grab (holes on faces), use less material (hollow) and able to connect to hold different types of shapes. I would have liked to design it where it didn't need to connect using a separate part, but I didn't want to worry about supports (I removed the holes for the one I printed), and I didn't want to put too much time into it.