We're all concerned with our carbon footprint, a good reason why ETH is moving to proof of stake. What if we could record our footprint in an NFT on chain and that be as a record or what we had in a specific snapshot in time. Of course our footprint will change over time and this tool help us to find the motivation to start working on our habits and improve our world..
I am using a REST api to send data to then modify the contract, compile it with hardhat and deploy it on the Polygon Mumbai testnet. The Polygon network provided ease of use, I used something really hacky for this and it's modifying and compiling the solidity contract on the fly, so each time new data is received a new contract is compiled and deployed.