Using a mix of D&D dungeon tiles and handmade items. I picked up 2 bookshelves on Etsy, the artist did a wonderful job of which I tried to mimic with my own larger version. The scrolls and books he made are fantastic and I have nowhere near the time to figure out how he did it.
DogMightGames made the dice chest and rolling tray. Dice chest is perfect, but it took them 2 weeks over their max time to make/ship me a dice tray with a significant wobble to it. Still irks me when I hear the clunking back and forth on the tabletop.