Ira I have a few different Goodwill type stores in my area, Lifeline (suicide prevention charity), Salvos (Salvation Army), and Endeavor (Disabled Care & Employment), plus a handfull of others.
Let me tell you the babes in these stores are gorgeous, supper hotties even! They know how to make a man feel like a man, if you know what I mean....
As for boxes, Base, Coby and other super rare Chinese brands abound. Claimed power ratings of 500 watts from 2 inch speakers are common, High quality AV gear such as Goldstar abounds.
Yep, our Goodwill stores here are a gold mine.