grow ivy type creeper on the pot itself. the pot looks wonderful sitting in the Japanese variegated hakone grass. It would work with hosta as well, but the hakone grass is a little more dynamic looking.
Hostas are a topnotch groundcover for shady areas. Plant them on a tough-to-mow hillside to create a lovely, carefree garden bed. If you have a steep slope that water runs down so quickly the soil can't absorb moisture, try breaking up the hill with rock