How about some rosemary, hebes, and clematis up the house. You could also try growing a few annuals such as calendula sown from seed directly into the ground. Some ornamental grasses will be low maintenance,
South facing should = warm and sunny. So lavendar, sentollina, (both grow to about 75cm) cistus (depending on which one, about 1.5m all round) are all reasonably drought-tolerant, sun loving shrubs. You could plant them through weed fabric and mulch with a layer of gravel, iy you didn't intend to add more plants later. Maybe with the lavendars forming an informal low "hedge" or lining a path?
I am looking for ideas for what to put in my south facing front garden. We are in the middle of creating a boarder though I'm not sure what to put in it. Ideally I would mostly like some plants/shrubs? I can just put in and leave apart from pruning/cutting back hopefully with a bit of colour/flower. Its not a huge garden I would guess maybe 10x20 ft, so I dont wan't anything too over powering.