DIY Wood Box Tower
Build a tower of boxes for your cat to climb! Cut six squares for each box. Cut a variety of holes from the side pieces of the square for your cat to use as doorways, and cut one hole in the corner of each top and bottom piece of each box except the top and bottom pieces of the tower. Paint the boxes, then assemble them so that the top hole of each box is in a different corner of the tower than each neighboring box and that one corner is aligned to create a ledge along the opposite corner. Cover the inside of each box with carpet, cut out the hole from the carpet to match the hole inside each box and cover the ledges with carpet. Cut a piece of PVC pipe, attach a PVC end cap on either end, paint the pipe with glue and tightly wrap a piece of natural rope around the PVC pipe, then attach the scratching post to the base of the box tower.