I've started thinking about maybe doing a desert-themed world, with a palace made out of sandstone and the only source of water for miles being my infinite-water-glitched spring. The only problem with this, resources would be kind of hard to find, and indeed, expanding my palace in the downwards direction would be difficult with all that sand. But there'd be a ready supply of cactus, plus feeling like a lot more of a survivor than in a forest full to the brim with cuddly creatures and resources aplenty.