Giveaway: Katris Cat Scratching Block

Katris is a system of corrugated cardboard shapes that you can arrange in endless configurations. Remember the computer game Tetris? You get the idea. We reviewed the entire system a little while back, and gave it two thumbs and four paws up.

The pieces are hand assembled from 100% recyclable cardboard, using 90% post consumer recycled content. They use only non-toxic starch-based adhesives and no inks or dyes. Each piece is nice and sturdy, and as long as you start out with a solid base, you...