I'd never use those things - I'd worry too much someone would hack it in a very malicious Monty Python "Hungarian Phrasebook" way. "I like banana cream pie" becoming "I'm going to set fire to the White House".
Yesterday being Friday, I stopped at Dunkin' before work & got a bacon, egg & cheese croissant & a medium frozen mocha no whip.
Lunch - Ditka's Italian Beef on a roll and cheetos.
Dinner - Some nasty (all breading) clam strips & baked fries.
Imagine the mind-blowing experience when all you've ever known is limited to a small space, and then you find out there's something larger beyond. Especially if the cat feels safe in knowing their space and finds out that there are no ceilings or walls outside.