Materials: FROSTA stool I have cats since February 2014. This year I adopted three stray cats. Inspired by the Frosta X, I made a Cat Tree for my kitties. I use double-sided tape and silicone to fix the pieces to the wall. The next day they did not fall off. This is my first woodworking. My husband and I have no woodworking experience, so it was hard. More photos and instructions of the Cat Tree by Frosta X on my Facebook album.