Most airdrops on Cosmos include a portion for staked ATOM. Then staked OSMO or lately bonded liquidity on OSMO became requirements for airdrops. Staked JUNO is another popular option among new projects that airdrop tokens. I've seen staked LUNA a couple of times too. That's from the big options, but sometimes there's another more exotic option as well, but you can't go wrong with the major ones for airdrops.

About returns, just look on Osmosis and pick the LPs you prefer. Make sure you check APRs for all 3 durations, the one listed at the top level is the APR for the longest period of bonding, for 14 days. You used crypto.com to buy ATOM, you might have some CRO on there and there is still a significantly better APR in the LP on Osmosis for OSMO-CRO than crypto.com offers on their app.