No lie, there are actually live plants inside these little key chains. I saw them at cutable—apparently they are the UK "It" gizmo right now. I verified this by trying to find somewhere you could buy them in the U.S.A. Thankfully, I did, but cutable is right they are available like weeds across the pond. My nine-year-old loves having key chains jangling off his back pack (he has oh, thousands of them). This would be a very springy addition.
You can get them right here. And you only have to water once a month.