Laundry. I've just finished chemo and live on my own and don't need much help now, but ten years ago when I first went through this a lady that I didn't really know that well used to call around once a week, pick up a load of washing, take it home and then bring it back washed, ironed and folded.
My son was 13 at the time; at least his school uniforms looked presentable--he was old enough to put a load of washing on but ironing was a step too far. By that stage I couldn't have cared if he went to school in his PJs so that simple act of kindness really meant a lot.