At this 4,000-square-foot magicians’ lair, kids can pick up a deck of trick cards, check out props once used by Houdini and, if they’re lucky, rub shoulders with illusionists like David Blaine, who’s a frequent visitor. Houdini admirers can throw their next birthday bash at the magic shop’s secret VIP room. Food, cake and entertainment are included—magicians, clowns and comedians are available for hire.