A winery could assign a token to each physical bottle, and lets its customers freely buy (winery is involved) and then exchange their tokens based on the supposed bottle value ups and downs (winery is not involved any more). Then, from time to time, they come to the winery to take back a real bottle from a token.
Admittedly, there is little to program, but we can imagine all sorts of auctions, games (tokens becoming playable items in a virtual world, but still exchangeable for real bottles), etc., around those tokens.
Admittedly, there is little to program, but we can imagine all sorts of auctions, games (tokens becoming playable items in a virtual world, but still exchangeable for real bottles), etc., around those tokens.