Bear,
A pillow case would be good. I have some larger pieces of fabric that would make a single size pillow case. I'll make up a sample and have it to show her. French seams would be great. I like to do those when I make pillow cases so they don't ravel. I made my gson a pillow case last Christmas & sewed Hunter Green grosgrain ribbon over the seam between the 4 inch border & the case. I noticed him figuring out how I sewed it on, making two parallel seams to sew it down. I like to see when young folks are curious about how sewn items are constructed. I've told him that he's gonna make some young lady a great husband. We get a good laugh out of that. My gdau doesn't want to get married & definitely no children. She may change her mind though if the right young man comes along. Listen at me going on. Yes, I'm proud of both of them. They're both in Band & get lots of honors.