I am staking few IBC coins ($ATOM, $OSMO, $TIA, $DYM) purely for purpose of airdrops, $ATOM and $OSMO being significantly down from their ATH prices also played some part in having them.
There is one other I stake which is $HIVE — the native coin of Hive ecosystem (
https://hive.blog), I hold it there to delegate to other users and recieve delegation rewards, without delegating you can just hold HP into your account and it gives you power within Hive ecosystem proportional to Hive Power you hold. For example, more HP you have, the more your upvote and downvote will be worth.