If you put potting soil in pressed paper egg cartons (bottom half), scatter some seeds, and water them daily, with enough sun, they'll spout sweet, tiny basil plants. Every time I pass those $5 live basil plants at the grocery store, I do look longingly, dreaming of the instant gratification fresh pesto would bring. But I resist. Once these little guys get going, we'll have more basil we know what to do with.
That is, if I can continue to keep the squirrels away.