For those wondering about the Solo Bike Holder, try this link: http://tinyurl.com/69c2u The one originally posted had too many "http://"s in it. For some odd reason it made my Firefox browser go to the Microsoft homepage.
That Solo rack looks pretty cool in its simplicity. Of course you need a wall, and a unicycle will hang upside down, but it could be great in the garage or apartment.
I never use unicycle stands myself. I have a couple and I use them once a year, when I do my show in the middle of the street at the Modesto Family Bicycle Day. It's a wide street, so I have to fill up the space! At work, my unicycle leans against the wall.