For those who have everything: The Treadwall

The Treadwall is a home contraption that “brings the fun of the rock-climbing gym” to any 10-foot-tall room. Grab onto a hold, start climbing, and the panel in front of you will start rolling like a vertical treadmill, creating “a never-ending rock face.” If you upgrade to the pro model, you can even tilt the device to create a more challenging climbing angle. Sure, it’s a bit discouraging to never get more than a foot off the ground. “On the other hand, you can no longer plummet to your death.”
$6,950, brewersledge.com 
Source: TrendHunter.com