Another Magnetic Stirrer, this one with a harddrive magnet

Another nice (build for a magnetic stirrer.  Only two issues, one I don’t come across alot of barrel receivers in scrap/recycling I do.  Second is the need for a 12 volt wall wart.  I have 5’s, 9’s, but 12’s are pretty rare for me.

https://www.instructables.com/id/DIY-Magnetic-Stirrer/