Construction/Paint Weighted Platform for Scale Modeling

I used to use Tamiya paint bottles to put scale model parts on there for construction and painting, but the top of the lid is not flat.

So I created this simple but small, stable platform that is weighed down with 2 M10 nuts that are placed at a pause while printing. The bottom is the same diameter as a Tamiya paint bottle for easy rotating in the hands. You can also lay it down on the side, and it will not roll. I put Blu Tac on it to secure the parts to the platform.