I saw these recently on Ready made and wanted to drop everything and start making them. Of course, it had to go on the "to-do" list, which seems to grow faster than I can keep up with! Oh well, this one's a winner, and would make a great gift - especially now that summer is coming! The project was featured in the Ready Made 100 contest. I absolutely love Ready Made, just about as much as I love instructables. Anyway, Here's the tutorial: Framed Succulent Garden.
Here is another version from Better Homes & Gardens, done in a wreath style. I really like this one, it's nice to see wreaths around when it's not the holidays. Tutorial aqui!