http://diymushroomgowingnz.blogspot.co.nz/ has a great range of selected beginner to intermediate mushroom enthusiasts ready for you to click and buy your grow your own mushroom kit and have it at your door within a couple of days.
AMAZON is online's biggest and safest superstore. aside from a range of mushroom grow kits I have hand picked a few maybe great Christmas idea's that even grandpa may enjoy