You'll need to download and import the textures from Poly Haven.
The ones I used are:
- Plant - White Pot by Jakers_H [CC-BY] via Poly Pizza
- Palm tree by jeremy [CC-BY] via Poly Pizza
- Houseplant byQuaternius
- Chair by CMHT Oculus [CC-BY] via Poly Pizza
- Adjustable Desk by jeff cobesign [CC-BY] via Poly Pizza
- Monitor by Poly by Google [CC-BY] via Poly Pizza
- Keyboard by Alex Safayan [CC-BY] via Poly Pizza
- Mouse by Poly by Google [CC-BY] via Poly Pizza
- Shelf by Poly by Google [CC-BY] via Poly Pizza
- Lava lamp by Poly by Google [CC-BY] via Poly Pizza
- Low Poly Charmander by Tipatat Chennavasin [CC-BY] via Poly Pizza