Children, simply through their process of existing, are no strangers to small spaces. By the time they're fully cooked and ready to leave the mommy oven, they're pretty pleased to be out into the world.
In spite of their narrow escape from claustrophobic conditions, however, kids seem strangely willing to crawl back into small areas as soon as they can. Example, when Helios was learning to crawl (he was a back-crawler for weeks before he figured out how to do it on his knees), he adored crawling under the ottoman (where he'd promptly get stuck). More recently, Helios has discovered the odd and comforting delights of climbing into the dryer, which he particularly enjoys right after a load of laundry has finished so he can enjoy the warmth of the cylinder.
Hesperos seems to have adopted his brother's proclivities for small places. During a recent hotel stay, we were watching TV before bed and looked around realizing that Hesperos was no where to be found. Why? Because he had tucked himself away into the bottom drawer of the hotel dresser. Wouldn't that have been an unhappy surprise for the maid the next morning?