His ideas and imagery come from there, I would guess. He said somewhere that it's like diving deeper down to catch the bigger fish. So we end up with quite strange, but very detailed and interesting imagery and set of characters.
It's also not completely random. There is some loose internal logic and Lynch knows what it is, I feel, but he refuses to explain it. It's part of the fun to try to decipher it.
The furniture pieces have some art deco motifs, and look like they would fit into the Twin Peaks universe well. Specifically thinking of Naido's place or fireman's castle on the purple ocean from The Return https://backtotwinpeaks.com/twin-peaks-articles/supernatural...
The idea of places and even furniture, specifically, hosting spirits is also common in Twin Peaks. here I was remembering Josie being stuck in a wooden knob and log lady's husband spirit going into a log.