I believe that your question is raised, because with a small amount of soil it will cause the plants to dehydrate quickly. There is a filler that you can buy that is similiar to the filler in diapers. Take a look at this website.
http://www.crystals.us/WSHousePlants.htm
Here are some plants to consider though.
Annuals: Abutilon, Bacopa, Callibrachoa-Million Bells, Coleus, Convolvulus, Dahlia, Fuchsia, Geranium, Herbs, Impatiens, Larkspur, Lobelia, Marigolds, Nasturtiums, Oxalis, Petunias, Scabiosa, Wave Petunias
Ornamental grasses, Herbs, Miniature Roses
Warm Season Vegetables: Tomatoes, Squash, Edible Flowers
Carrie Ross