Anyone buy or make a kitchen island for more counter space?

I found a roll-around hospital cart,(the type you would eat from while in a hospital bed) and replaced the top surface to one that matched our counter. This cart has wheels and the top adjusts to whatever height we want. We will use it to extend our dinette, adjust it and roll it over to the sink, lower it and roll the wheels under the couch for a table, and normally set it in an area above where we put our dog bowls.