Options for staking ETH without triggering capital gains tax?

Hi all, I have a decent amount of ETH in my long term bag which I would like to stake. This usually requires exchanging your ETH for an equivalent token (like stETH or frxETH) and that would trigger capital gains tax, which I would like to avoid.

What are the best options for staking ETH without having to swap it for another token or having to set up your own validator?