Mealy blue sage, salvia gregii (white, red, pink), lavender, lantana, and gazania all do well in containers that aren't watered daily. I've raised every one of them in containers that were in out of the way places and did just fine if forgotten for a few days. Get a deep pot with a drainage dish at the bottom, mix a couple of handfuls of cornmeal into the potting soil, water them in well, and MULCH THE SURFACE. That is very important, especially with pots that aren't watered frequently. Horticultural cedar is a great choice for insect repellant qualities and it looks good. It also smells nice when watered or when it rains.
Maybe a salvia gregii or lantana in the middle with some gazania around the bottom would do well. Gazania stay under 1 foot tall where salvia & lantana will grow up to 3 feet. All are perennial and will grow back next year so long as you mulch their feet when they freeze back (cut off the dead stuff) and remember to water them occasionally over the winter. My sister cuts back the dead stuff and puts in winter greenery for a couple of months, then removes those surface pots when it starts to get warm again. I have a lavender that is 3 feet tall and 3 feet around in a pot that has been outside for the last 3 years. It freezes back but not completely. That might be a good choice for you so you won't have empty pots all winter. Play with these! If one doesn't work, you can try another. After all, most gardens are a work in progress.
Hope that helps!
Kathe