1. Obtain a flat of ramen noodles (cardboard with shrinkwrap).
2. Puncture shrinkwrap on one end and remove ramen packages, leaving plastic and cardboard mostly intact.
3. Place box upside-down on floor (cardboard up, plastic down)
4. Watch cat enter hole in side.
5. Observe the box lurching around the floor.
Duration: 3 days so far.