"Repurposing stuff is awesome," Purva remarked. She searched around the small sand dunes around her until she found a splinter of driftwood, which she stuck into the sand in front of the future moat of the castle. "Look, it's a tiny person. They want to get into the castle, but will they? It all depends on the will of the rulers... But wait! Is that a rogue guard I see, lowering the drawbridge?" She found another chunk of driftwood and placed it over the trough she'd dug for the moat. She should probably get to work on that pulley soon...