Usually this means getting them all together, calling around to find how much it costs to actually make a quilt, then putting them back in storage.
Takes a lot more time and effort to make a quilt than people think.
T-shirts already have a front and back. You just need some long running stitches to join two shirts together. Shove them with the amount of batting you want, and then another running stitch to seal them up.
Hand sewing a quilt is a big effort. If you love doing it, it's awesome. If you don't, it's just massively frustrating and time consuming.
I say this as somebody who hates all parts of sewing except old machines.
I think you found the next YC business idea
It was made before we met, so I don't have a sense for the cost. As a functional swaddle of memories, it is worth far more than a blanket from the store.
One thought for those considering it -- the shirts can't be completely worn out. A threadbare shirt will make a threadbare quilt.
If you want one made, there are companies and quilters everywhere that make them.
As for cost, the idea that they are expensive depends on how you view the work. I love quilting but understand that what I sell them for keeps me in fabric. I'm not earning a living from it.