Pal ball from Pal world with slots for magnets which can be found on Amazon. Scaled to fit in your hand. I may upload a stand at a later time.
https://www.amazon.ca/gp/product/B09S5SMFY4/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
Model has also been optimized for very easy painting just use the fill tool and turn off edge detection. A second better scale-able version with clips will be uploaded at a later date.