Never use my Add a 1/4" ruler...wasted money. Worst thing ever bought were rotary cutting blades at Harbor Freight. I know some of you love them, but I've had 6 packs (all bought at different times) and none of them are sharp.
I like to bring my "unloved" to my quilt guild where we swap for gizmos that we want or need. We do this with fabric as well.
Just my opinion....
Anita