Come fly with me
The design of a former employers datacentre was laid down prior to the widespread deployment of virtualisation, but completed after - as a result about 6 rows of 2 large 24 row data halls were occupied.
The second of these hadn't even been fitted with racks, so hows a CIO to use a cavernously large empty room? Why, as a space to learn to fly his RC helicopter and drone of course!