I love this place! In the spring (after I move into my new house) I'll be doing the same with my extra string sets. Turns out, after a couple decades of dealing with a skin condition affecting, mysteriously, only the fingers on my left hand and all of my pointer finger on said hand, that I have a sensitivity to nickel. Who knew? My current doctor, that's who! (on a side note, when you find a good GP MD, don't go elsewhere).
So, I have been successfully using stainless steel strings and the skin condition, after 19 years, has gone away. Not as thrilled with the stainless tone versus nickel, but my fingers like it better. I look forward to trying the cobalts. Anyways, (man did I ramble!) I'll be wanting to offload all my old nickel strings after I get them out of storage. I bet I'll find some takers!
Very cool thing to do, Larry! Man, I love this place.