Semiarundinaria yashadake 'Kimmei' is a very pretty and colourful bamboo which also does quite well in a pot.

Sasa kurilensis 'Shimofuri' is another great choice but mine took a bit more care than other runners, maybe a larger pot would have helped.

Another eye-catching runner is Pleioblastus Gramineus which has rather narrow leaves and does well in a pot. I keep mine on my back porch and it gets NO dorect sunlight although it does do well in mostly sun.

Personally, I like clumpers in pots, since they take longer to get rootbound, unlike runners which sometimes have to be repotted every year. However, most are less cold hardy.

Kt