So, there I was in the royal pig town, when I heard this loud noise, almost like a bunch of waterfalls. I tracked it down, and there was just a pile of three relics in the middle of the road. I picked 'em up, and the noise continued emanating from this one spot. I relogged, and the sound continued (the relics did not respawn).
When in Pig and Piglet's General Store and the front desk has been destroyed (have not tested in other stores) collecting poop from the floor causes the shopkeeper to run up to the player, as though they were about to pay the customary oink, and sit down at a miraculously appearing desk from the void. This allows for boards to be produced from thin air (albeit very occasionally), but can also prevent the player from accessing sale items that may have been behind where it appeared.