More gardening advise, did you say? OK, i'll try not to write a novel this time:
Thyme: a lot of thymes make great ground covers. They're pretty, conserve moisture better than mulch can, and they taste amazing in stuffing!
Speaking of stuffing... Summer Savory. Brush up against it and you'll have a hankering for roasted chicken!
Rosemary: can be tricky in the midwest. 'Arp' is reputed to be hardy to zone 5, and the stems can be used as skewers for grilling! It looks nice with lavender, too. Let me know if you want some, cuz i have some and it roots easily from cuttings (in water... for real).
Nasturtiums! They cover the ground in neat mounds of edible foliage, have pretty, brightly coloured flowers (which are also edible), and the immature seeds can be pickled and used as a substitute for capers!
Sweet violets: They smell nice, and, the flowers are edible. They make a very pretty/tasty garnish for cakes and cookies.
Strawberries: Another great ground cover, they pull in bees like crazy, and you get fruit!
Basil: everyone is telling you to get some for a reason. It's cheap to buy it as a plant, expensive to buy it as a spice. Therefore, it's a good investment. 'Spicy Globe' is a strong recommendation. It grows naturally into neat, spherical mounds that look like topiaried boxwoods. It has a nice, slightly peppery, traditional basil flavor.
OK, i'll stop myself there, lest i go on forever. PM me if you're interested in any cuttings. I don't have all of the stuff i mentioned above, but i do have a lot, and i'm more than willing to share!