I think everyone has heard about earning from the Bitcoin Token trend by now. For example, Ordinals Wallet gave away $3,000 worth of NFTs to users who made at least one transaction in the wallet. The $OXBT token minted for $13 and could be sold for $1k, the NFT Pepe\&Pepita minted for $30 and could be sold for $250 and there are many such examples.

StarkNet - is a Layer2 ZK-Rollup solution for Ethereum scaling.

Nitro is the first Solana VM chain, built on Cosmos as an optimistic rollup that features Sealevel Virtual Machine (SVM) compatibility. This enables developers to easily launch their Solana dApps on Cosmos and access IBC assets. Apps built on Nitro can leverage the powerful Solana VM while gaining the interoperability that is native to IBC.