Fern's little mint tin garden made me squeal. She used a tin from Trader Joe's but as we're an Altoid household, that'd be the direction I'd go. Just look how cute her little garden turned out:
Other stuff we'll need to make one is an all, hammer, cactus potting mix and 6 to 10 sempervivum. Fern bought hers at Arrowheads Alpines, but I'm guessing a good local garden store could hook us up too. For all the deets, visit Life on the Balcony.