Brief description: Two plastic lids are stacked on top of each other, connected with an eyebolt and held in place with a carabiner. The top lid has several holes cut into it to allow the chimps to access the treats smeared on the back lid. The back lid has chain attached to it at two points to allow for somewhat stable hanging on the caging.
Materials: Plastic lids, eyebolts, locking nuts, washers, chain, (optional) firehose to cover chain.
Assembly instructions: Cut several holes in the plastic lid that will be the “front,” using a hole saw. Cut a small straight line in the center of the lid that will be the “back” to allow for the width of the eyebolt to pass through the lid. Attach the eyebolt to the “front” lid using a locking nut and washer, with the eye pointing inward towards the “back” lid. The eye should be able to pass through the hole you’ve cut in the “back” lid to allow for assembly of the puzzle by adding a carabiner to the eye, and to take it apart for easier cleaning. You should also attach 2 lengths of chain on either side of the “back” lid using a bolt and locking nut and washer, to allow for the device to be hung from the caging.
How to use: Take the device apart, and smear treats (peanut butter, pudding, mashed banana, etc) to the back lid, so that once re-assembled the chimp will have to turn the “front” lid so that the holes allow access to different areas of the device, and thus more treats.
Price: You can purchase a 12 pack of 5 gallon bucket lids for $45, and a 15 pack of 1/4-20 x 2 1/2 in eyebolts for $11 (which makes it about $8.25 per rotating holey lid, without cost of chain, nuts, and washers).
