Fun! Take some pics and show them to the LFS
which sells SW
, and Trade them for something else if they do that. Most independently owned stores will trade, or give you some credit. There are people who would be happy to buy some, no doubt. Depending on whether you feel that would safely work out. Meet in a public place, etc.
Possibly a very good option would be of an established local/regional SW
fish club. Often the are meetings with mini auctions, for those things which the club gets a cut, less if you're a member and more if you aren't. Sometimes there is a minimum bid, or you could risk an item selling at a very low price, if it isn't popular. Mostly depends on how they run their auctions. Or they might offer a swap and shop where members come to buy and sell like a little swap meet.
A nice problem to have.
New to FW fish? First tank in a long time or EVER??? Need some info on keeping fish?
Start here - Aquarium Advice Article
FW Favorites right now Clown Loaches, any shrimp - SW Vase Red Mangroves