This is the system I'm using to clean resin parts from my EPAX X-1 LCD SLA printer. Included is the strainer platform, its handle, and brackets for the front and back of the stirrer unit.
It's designed around this magnetic stirrer: https://www.amazon.com/Magnetic-stirrer-magnetic-Stirring-Capacity/dp/B072K24X5P/
and this Sistema 2.3L container: https://www.amazon.com/gp/product/B005D6Y4IA/
I recommend using two strainer platforms and two Sistemas (and an extra magnetic stirrer bar) for a 1st and 2nd wash in IPA.
I printed in PLA and it's working well. The brackets were hot glued to the stirrer, and the strainer platform can be superglued to the handle if needed.
UPDATE: By request, I added a variation with 5mm longer legs on the mesh platform, because some stir bars are taller than others.