Cat-lover and self-proclaimed geek Ben Millam built a machine that rewards his indoor cat with food each time it ‘hunts’ down a wiffle ball. Millam explains:

 

“This all started after I read an explanation of why cats go about repeatedly exploring the same areas: it’s partly to establish and survey their territory, but they’re also practicing ‘mobile’ hunting: moving about, being curious, and poking their noses around in the hopes of upsetting potential prey and finding a meal.
 
So what if my cat, while out on patrol, actually found its prey? Surely this would bring him one step closer towards a more fulfilled and self-actualized indoor kitty existence.”

 

You can read more about how he trained his cat to equate balls with food and also learn how he built his feeding machine on his blog.