A start up (or Google) ought to give a similar kind of thing to their employees on their first day. At minimum it would get marketing buzz.
"Hey Bob, glad you could join the team! Here's a big cardboard box to sleep in, it should fit under your desk nicely. You'll find a couple of onesies in there, some shampoo and shower gel, toothbrush, toothpaste etc. You'll never need to leave the office again!"
"Oh, and don't worry about that 'I'm sleeping in a coffin' feeling, it goes away after a couple of weeks"