How has this brilliant idea escaped me? When the perfect thread comes on a spool that's imperfectly sized for your sewing machine, place the spool in a heavy mug, and position it on your work surface directly underneath the spool pin.
Pinner says...Attention all beginning sewers (or those who have thought about it) "how to sew using a sewing machine" -- This is a SUPER great beginner guide... I just might give sewing a try. Just in case I ever get to.