Household plants need nourishment, particularly in the dead of winter when sunlight is limited. Plants love starch, save the water you boiled your potatoes in, let it cool and use it to water your household plants.
My neighbour has a row of roses, which he took as cuttings. I asked how he took them. He simply plunges the cuttings into the ground. But his secret of success is the humble potato! Before planting cuttings, he pushes the bottom end into a small potato, which he believes keeps the cuttings moist as they develop roots. It sounds crazy, but his row of allotment roses is proof it works.