There is a lot of info out there on how to make a stir plate for yeast starters. The link below describes me having a go at making one. Hope it is helpful to someone out there.
http://beeritsagoodthing.blogspot.com/2013/05/homemade-stir-plate.html
-Greg
http://beeritsagoodthing.blogspot.com/2013/05/homemade-stir-plate.html
-Greg