This is a companion thread to yours. Has a lot of non-sewing items used in the sewing room. Some really great suggestions.
http://www.quiltingboard.com/main-f1...g-t127919.html
I use my electric manicure kit to sand down the little nick in spools of thread are. My thread has gotten stuck in that little slit and then does not feed right to the bobbin. So, I just file it down.