For $2.25, you can have some of the best chocolate on the market?and a wacky German toy to tinker with while you stuff it down your trap. That's the beauty of Ferrero's Kinder Surprise Egg, available by the piece or dozen at Huntington Beach's Euro Market, Bakery & Deli. Beneath the crinkly orange-and-white wrapper lies an egg-shaped layer of smooth, two-tone milk and white chocolate. Inside that tongue-melting treat sits a pastel plastic capsule containing . . . well, that's the surprise. Toys range from Lego-like robots to wooden trains and puzzles. Note: The small pieces make the toys a bad idea for kids under 5.