He slipped his hands into his tool belt and started summoning supplies—gears, a tiny wrench, some strips of bronze. As he walked, he built—not really thinking about it, just fiddling with pieces.

By the time they neared the crest of the mountain, Leo was the most fashionably dressed sweaty, dirty hero ever. His hands were covered in machine grease.

The little object he’d made was like a windup toy—the kind that rattles and walks across a coffee table. He wasn’t sure what it could do, but he slipped it into his tool belt.

The Lost Hero, Chapter XLI