Leo Offhand Build

	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.
…
	Leo dodged behind the bulldozer, wound up his homemade device, and dropped it into the driver’s seat. Then he ran to the right, heading for the tree harvester.
…
	“Dozer!” Leo yelled.
	Thirty feet away, the bulldozer roared to life. Leo’s makeshift gadget had done its job, burrowing into the earthmover’s controls and giving it a temporary life of its own. It roared toward the enemy.