One of the big projects that will need to implement NFT lending/borrowing between holders is Generous Robots DAO.
For example: i can rent a GR NFT from someone for 2 weeks. From there i will be able to stake the NFT for 12 days, or use it to breed with my own robot, or whatever comes next...
GR is one of the big projects that proved themselves worthy of staying in the NFT space, IMO.