Weird/Cool Goodwill Items

[CLXcool]

So what is a Goodwill store?
From my understanding in this topic, I assume they sell old, but awesome merchandise?

Basically its a store where people tend to donate their stuff too. But in the end. To some(depending on the location and store) you'd find a treasure within the store. I haven't been to one in a long time. I know that my brother came across finding a Majora's mask instruction manual right around the time the N64 game of it came out. In good condition too.