Very interesting, Harriet.
That's an even better excuse for me to take a sewing class later this month, to learn new creative techniques related to making knit tops, and improve my pattern drafting skills in general to help my clothes fit better.
sewing the same pillow over and over, or making a large set of all the same pottery bowl or woven basket would give some benefit
That's good, because I'm still trying to finish a stack of little bags for preschoolers, which are all made the same way. In fact, several are being made from the same fabric, so I'm not even seeing a change of colors.
A slight correction to the beginning post in this thread: The backpacks I sewed with the sewing group last month used the same pattern as the ones that people do for Lutheran World Relief. However, the ones we made will be delivered by a local Catholic church to villages in Haiti, and I don't think they will be filled with anything. The children need them to carry their books to school because most have to walk long distances every day. My sewing group is not affiliated with any church, but one of our members belongs to the Catholic church and asked the group if we would help them with this project.