This is another random little tip post, but you know this simple solution didn't occur to me until someone told me. So ... maybe you'll like the idea too!
Have you ever wondered what to do with / how to dispose of those used rotary cutter blades? You know they're still too sharp to just throw in the trash (ok, I have two toddlers in my house so this is of concern to me).
Someone once told me ... "oh, don't throw that away like that! Just mark 'used' on the dull blade with a Sharpie and store it back in the box until you have a box full of used ones!" Clever, right? Happy sewing :)