Part of one of the halls featured a bunch of equipment and help from TechShop, a tool shop which is open to the public. Sort of like Kinkos, but with power tools instead of a laminator.

A (laser?) metal cutter, shrouded behind a yellow light shield.

One of many human-powered carnival rides. This one spun like a G-force test in the air force. It was spinning like crazy. 

Can you imagine pedaling your way to a red out?

While I was at the top of another of the rides, the Ferris wheel bicycle, a chain slipped.

It gave me a nice vantage point for photos of the rest of the center lawn.

Merry-go-round bicycles