Yes, there are other use cases for XTZ that you may not have thought about. For example, Yupana Finance has recently released an open source Tezos lending protocol that allows users to borrow and lend XTZ tokens. This protocol allows users to access liquidity, receive flexible and secure loans, and earn interest on their XTZ holdings. Additionally, XTZ can also be used as a staking token to earn rewards and support the Tezos network. With the increasing use of XTZ, more use cases are likely to emerge in the near future.