Just got a couple of National Geographic Hear It, See It, Detect It Explorer Kits for my oldest sons for Christmas. I checked them out to make sure they worked and I have to say that the listening device and metal detector are pretty darned cool. The binoculars leave a little to be desired but are still sturdy. You can check them out here: http://www.overstock.com/Sports-Toys/National-Geographic-Hear-It-See-It-Detect-It-Explorer-Kit/4771873/product.html Any suggestions for adventurous holiday gifts? I want to kit them up this year.