I doubt she said it quite like that but If the load is light enough you could always go Grandma Gatewood style:
Or back to Dale's single strap idea ... I've hiked many a mile with day hike stuff (first aid, rain gear, snack, navigation) packed in a medium sized old Caribou fanny pack carried "bandolier style" with the strap passing over one shoulder and under the other arm.
Not having access to a sewing machine, I think your lowest cost MYOG solution might be to buy a pre-made silnylon stuff sack (example: $12 for 12 liter size, $14 for 25 liter at golite) and then hand sew a single 1.25 inch strap down one side. Add a ladder buckle and you're in business. good multi-use possibilities too.