Mike Wilson and Megan Hanneman, founders of CatastrophiCreations, design modular wall-mounted systems to keep cats active. Parents of humans and pets alike (myself included) are all too familiar with the trip hazard of toys scattered on the floor. Wilson and Hanneman move the activity zone to the wall with vertical playgrounds that allow cats to climb, jump, scratch, and even tip-toe across swinging bridges. Eschewing bright colors and plastic materials, the designers use solid wood, hidden brackets, and canvas to create more subtle and sustainable products. You can learn more about the the Grand Rapids, Michigan-based business in an interview and factory tour on Etsy’s blog. Check out their range of products, from the Thunderdome to the Temple Complex, in their online store.