U-Shaped plant vase to fit 2 plant pots. Designed to fit 90mm diameter x 83mm height pots (or 65mm x 60mm with the small version), but I've included the step/f3d files so you can modify it to fit different sized pots. The design is parametric, so you can just change the parameter values and should work with different sizes.
The author hasn't provided the model origin yet.