The Magic Bean is a little sprouting plant that has a message. In this case it's "I Love You," but if you're willing to buy 5,000 or more you can have any message you want on the plant and any design on the can. For those in to the plant-in-a-can thing, there's also a line of Flower Cans. Fascinating.
$10 at Compact Impact
Related post: Garden in a Bag