ThinkGeekâ€™s Grow Your Own 1up Mushroom Kit might grant you â€œimmortal life beyond dreams of manâ€ if you eat it, but it also comes with the warning, â€œDo not put in faceâ€. Such mixed messages from such a cool plant. The mushroom comes in a sewer-pipe pot, and only requires water, a food mixture, and a dark location to grow into a very realistic looking 1up mushroom. Just be careful, Bowser is on the loose again.
Edit: Sadly, this product is only available during April, and only to fools.