For $6,000 on eBay, you could land a Spaceball 2000 human gyroscope, “based on NASA’s Astronaut Gyroscope Trainer.” It’s designed / built to ASTM Standards and features a hydraulic-powered motor. Auction page.

The Spaceball 2000, now presented as a promotional tool and cash earning machine. A compact and complete business opportunity, or an exiting addition to an existing business.

[via eBay]