I live in a senior community and have no gardening space. What can I get...
Container gardening is one way to raise plants when land is scarce.
Are there any public areas outdoors where a raised bed or large pot could be situated in the sun? It could be a group project to plant blooming flowers, or even some herbs and vegetables.
For yourself indoors, consider foliage houseplants like peace lily, pothos or sansevieria. You could add to that occasional pots of blooming plants that are often kept while in bloom for a few weeks and then discarded, like kalanchoe, blooming spring bulbs, cyclamen, poinsettia and others that come to nurseries and the flower sections of most grocery stores.
Here is our Houseplant page, which includes links you can click on to other articles you may find interesting: http://www.extension.umd.edu/hgic/plants/plants-houseplants-seasonal
And here is our vegetable page where you can look at more information on Container Gardening and Salad Boxes, etc.