By recommendation, we drove down to
Casey farm (Saunderstown, RI) this past weekend for their plant sale. They were selling hundreds of varieties of plants. We picked up a few tomato plants, 5 different kinds of basil, 2 kinds of hot peppers, leeks, and red onions. Luckily we had already picked up a few containers, but I don't know what I'm going to do with the leeks and onions.
Note: Ocean State Job Lots carries all sizes of plastic containers for a few dollars each, in contrast to Lowe's & Home Depot.