Sounds like lack of activity combined with separation anxiety- animals don't have many ways to channel the resulting energy, and unfortunately the ways they do have tend to be harmful to either them or their environment. Try dedicating a chunk of time in the morning and afternoon to play time. Twenty to thirty minutes each should cut down the craziness.

Try to catch Jerry with an overly complicated plan?

Eating non food items is called pica and can indicate a nutrient deficiency.

What a catastrophe.

maybe start feeding your cat

My cat once ate a cactus too. Yesterday he ate some alage wafers I dropped on the floor. Carnivore does not mean no plants at all... There's a reason they eat grass.

Sounds like you’re leaving him alone too much. Could be lack of activity. Where I live it’s illegal to leave a cat alone for more than 7h, if he’s alone for hours every day get another cat so they’re not alone.

This is another reason why I hate cats.