In the last year or so, we've seen a lot of new & cool plant decor techniques. If you're a plant novice or too busy to water frequently, buy these plant kits that literally water themselves. Surround them with easy to maintain plants like cactus.
Vertical Succulent Garden by floragrubb: 20 x 20" panels with 45 slanted cells to support planats and soil when mounted vertically. The unit in the picture is made of 6 panels, each $79. Now, if I could only figure out how to make the panels myself..