Visit the Karak restaking platform.
If asked for an invite code, input FDiMg.
Choose any asset from the pool and restake it on Karak. We recommend staking Lido wstETH.
If you do not have wstETH, you can swap ETH for stETH on the Lido staking platform and wrap them on the Lido wrapping platform. You can now stake those wstETH on Karak.