The easiest way to grow mushrooms at home is with a five gallon bucket full of coffee grounds, and some Oyster Mushroom spawn. Spent coffee grounds can almost always be obtained free from a nearby coffee shop. Oyster mushroom spawn can be purchased online from Amazon or from a mushroom lab near you. Detailed instructions for putting together a five gallon mushroom farm can be found http://www.stormthecastle.com/terrarium/how-to-grow-mushrooms.htm
making a woodchip mushroom garden -- I had no idea this could be done! I knew about foraging and indoor mushroom cultivation, but this combines the best of both worlds. No more fear about identification, but if it takes off, you've got a lifetime supply in your backyard. Sweet.