This is one wall built for my future survival library. The bottom center has a space for villager xp trades ( have a villager now that offers four bottles of xp for one emerald). The sides left and right of him have retractable bookshelves hiding chest. There triggered by a pressure plate leading to a mono stable circut. Above the top chest for each has two hoppers level with the top floor. The top floor has an enchantment table with a high and low toggle for different levels.
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Still a work in progress. Im farming gold for the floor and still haven't finished the second floor. Thinking about putting a clock in to track the lunar cycle but still not sure yet.
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Hay. is Dolan.