Here is a list of cat safe plants. Alyssum, Bachelor's Buttons, Bamboo, Brazillian orchids, Bride's bonnet, Cape jasmine, easter daisy, german violet, marigolds, jacob's ladder, moss rose, hyacinth. The first link has a list of both good and off limit plants for your kitty. The second link is poisonous plants to avoid. The final link has good kitty-safe plants and plants to avoid.
Kitty Save plants: Achillea, Chervil, Hyssop, Orchid, Shasta Daisy, African Violet, Chives, Impatiients, Oregano, Snapdragon, Alyssum, Columbine, Japanese Matatabi (Silvervine), Pansy, Spearmint, Aster, Coneflowers (echinaced), Lavender, Parsley, Spider plant, Basil, Coriander, Lemon Balm, Pea (garden, not sweetpea), Spinach, Bean Sprouts, Cosmos, Lemon Verbena, Peppermint, Strawflower (Everlasting helichrysum), Begonia, Cress, Lettuce , Petunia, Sunfolwer, Buddleia (Butterfly Bush), Dahila, Lovage, Phlox, Tarragon, Calendula, Dianthus (Pinks), Marum (Cat Thyme), Portulaca, Thyme, Catmint (Nepeta Faassenii), Miniature Rose, Dill, Rose, Verbascum, Catnip (Nepeta cataria), Dorotheanthus (Ice Plant), Mint, Rosemary, Violet, Celosia, Forget-me-not, Monarda (Bee Balm), Torenia, Wheat (sprouts), Cleome, Heliotrope (Valeriana officinalis), Nasturtium, Sage, Zinnia, Chamomile, Hollyhock, Scabiosa
Of all of these kitty safe plants the easiest plant for a small place would be the spide plant. You can start one in a dixie cup of an adult. They grow with minimal care and minimal sunshine.