You've got to get yourself one of these. If you can find one, they're pretty hard to come by, but worth every penny. It is a collector's item, but I wouldn't suggest keeping it in the original packaging. It gets better with age and the small nicks and scratches it may accumulate add to it's value. You need to provide plenty of room for it to get going, and then watch out! If it gets dirty, simply wipe with a damp cloth. For more difficult stains, submerge in a tub of warm soapy water for 20-30 minutes. The batteries run down each night, but are easily recharged for another day of fun. And what fun there is to be had!
You'll have to get your own however because I cannot bare to be apart from mine for very long.