These two projects by Lithuanian firm Inblum are both great examples of using vaulted attics spaces to your advantage. I really love the bar above, it manages to feel cozy and light filled... The addition of skylights keep the ceiling and walls from feeling two low, while also creating visual interest. The textures are just great.
This apartment (also with vaulted ceilings) uses its soaring height well - The open stair leads to a loft above, which provides some privacy from the main space while still maintaining the connection. One thing I really like about both spaces is that they value and highlight asymmetric vaults, rather than trying to create a perfect centered vault, which while spacious wouldn't feel quite as dynamic.
Love both these projects.