For something a little different---I like to have a hanging birdfeeder outside in the wintertime. Last year no matter what I tried, the squirrels always defeated me and ultimately got to the hanging ball of birdseed and eat it all. The squirrels I have are major league aerialists!!! I had purchased one of those acrilique half domes that mount on a pole planted in the ground to keep squirrels from climbing the pole and tried putting it on the suspended ball of birdseed, attached to the wire. The squirrel would run out the tree limb, jump down onto the half "ball", hook his hind feet in the knot at the top of the ball, hang down over the edge and swing back and forth until he was able to grab the ball of birdseed. This year I have glued two balls together. The top "eye" will attach to the tree limb with a wire. The birdseed ball will hang from the aluminum fixture at the bottom. I have waxed and polished the outside of the acrilique balls. We'll see what happens---