https://www.cnet.com/news/you-can-now-buy-geckskin-gecko-inspired-wall-mounts/

Geckskin might sound like science fiction. The technology is based on phenomena found in nature. It was originally dreamed up by a team of research scientists at the University of Massachusetts. The group's goal was to mimic gecko lizards, specifically their amazing feet. Geckos are uncanny climbers. Many can scale even the smoothest of surfaces, even glass. What's more impressive is these creatures aren't light-bodied insects -- they can weigh 3.2 ounces (100 grams) or more.   

Right now Felsuma has 13 separate Geckskin devices listed on its website. They're grouped into four categories (introductory, experimental, preorder and concept). Ten of these items are available for purchase. Interesting examples include the $5 Griphanger Hookstrap, $6 Gripseal Strip (which serves as a weather strip for windows and doors) and the $1.50 Griphook FM.