I will do patterns with them. It might be interesting to go through the copper sulfate testing for SS. But so far I have only heard about tasting, and salt rusting them to test for galvanization.Hard to tell from your picture, but those may very well be galvanized.
Maybe use them for pattern templates? Can they be used for liners? Maybe? I'd see how readily they rust first. Galvanic corrosion might be an issue down the road.
Lots to learn. Lots to research.