Ten years ago now when the principal at my childrens' elementary moved to a new school the teachers and staff pooled their old school t-shirts and made her a quilt like that. It was marvelous. I had a pile of the kids' outgrown shirts and couldn't send them to Goodwill after seeing that quilt, so I went by the school a few weeks back with a dozen shirts on the off chance they had a use for them--it turned out they were planning an exhibit with old shirts but hadn't started gathering them yet! Maybe taking the logo and framing them. They were quite excited--and I felt so much better about culling these favorite shirts.

I think if you're concerned about the stretching of the jersey shirts you could add a lightweight muslin backer and either use an iron on (between) adhesive or baste them together around the outer edge.

SRS