It's another way that cryptocurrency projects verify transactions. If you hold on to those tokens for a certain period, then you'll be rewarded with them. Mining is the same thing with crypto - it requires some computing power & electrical usage
Plato is a web3 lifestyle app that brings Plato users out to physical restaurants to dine. Users who owned a NFT Table can eat at any local restaurants and earn DINE token, which is used to level up more seats, mint new tables.