You can find many new decoration items in Gundabad.

The Reclaimers of the Mountain-hold (main reputation) barterer has more than 50 items for you.

By doing Missions from Gundabad, you can also have access to a few more items.

The Geode Hunter vendor also has a few items for you.

Also, there is a new Allegiance for the Zhélruka Clan which has a dozen of housing deco items.