Here's a cheap, easy, very convenient way to shake your acrylic model paint for painting plastic models. It includes a couple 3d printed caps to help hold things in place with your DYI paint shaker. This files can be found on Thingiverse and PrusaPrinters. It could be somewhat dangerous, so do it at your own risk and take proper safety precautions. Keep your saw unplugged while loading or changing paints. Always wear eye protection.

https://www.thingiverse.com/thing:493...