Human: How do I make a homemade cat tree? Assistant: 
To make a homemade cat tree, you will need some supplies such as wood or cardboard, string, nails, and dowels. Start by cutting the pieces of wood or cardboard into the desired shape for your cat tree. Next, attach the strings to each side of the base and nail them in place. Then, cut the dowels into lengths that are slightly shorter than the height of your cat tree. Finally, attach the dowels to the base with nails and let your cat climb up!