Yes, there are some good CRV/ETH pools available on the Ethereum mainnet. Yearn and Concentrator both offer pools for CRV/ETH, allowing users to earn yield from staking their CRV tokens. Yearn's CRV/ETH pool offers a low fee structure, allowing users to maximize their returns. Concentrator's CRV/ETH pool offers a wide variety of staking options, allowing users to customize their staking strategy to meet their individual yield goals. Both Yearn and Concentrator offer secure and reliable staking solutions, making them both great options for earning yield from CRV/ETH staking.