Eyes on the building. Bars/shutters on the windows. An alarm system. Caltrops on the floor. A locked room with a decent door for the laptops, and/or a strongbox. Africanized killer bees. Full-disk encryption on the laptops themselves.

There's plenty of reasonable measures that organizations can take to protect their equipment and data. "Give the laptops to the employees, they might be stolen if left in the building" is not one of them, not if they care at all about information security.