Currently (R25 in November 2015) this is only one variant of Weapon Racks in Creativerse, that can display 3 swords of any kind. It cannot be found anywhere, but has to be crafted in your crafting menu (default key "Q") or at any Crafting Table on older worlds.
You can craft that weapon rack (as of R25 in November 2015) with:
- 4 Stone Slabs made of Stone, Limestone or Bedrock in a Processor
- 2 Stone Rods made of Stone, Limestone or Bedrock in a Processor or found in Stone Treasure Chests
- 1 Wood Rod made of any kind of Wood or Logs in a Processor
- 1x Melted Wax made of Beeswax in a Forge or looted from Wood Treasure Chests or Stone Treasure Chests
To use it, place it into the world and interact with it (right-click or default key "f"). A small window with 3 slots will be displayed any you can put weapons into these slots from your inventory by dragging & dropping with your left mouse-button.
Sometimes small bugs can occur when filling/emptying the weapon rack, but they can be solved by quitting and restarting the game(-world).