Are you going to make it yourself or by service do you mean someone else does it?
I am not skilled at quilting. Or, in sewing, for that matter.
My intent is to pick through the teeshirts I have and attempt to select enough to construct a quilted queen-sized throw.
I visualize that construction and quilting to be done by a professional service which has engaged in doing exactly that. Specialized quilting of teeshirts, which requires appending to special backing, as well as fill. There seem to be plenty if one goes online and searches using 'teeshirts' and 'quilt', and it looks as though there are three such contractors within a few miles of my home. The cost looks to run from $250 up (dependent upon size, mostly).
Well, I started looking through the collection of teeshirts I had stashed in the upstairs closet. It was a collection of those I was currently wearing, mixed with those which were "just a little too snug". I thought I could pull out enough of the latter to seed a coverlet. No go.
Then, today, in the process of packing the library downstairs, I freed up a couple of steamer trunks which had gotten trapped behind/under the upstairs expansion of the 'hobby workbench'. One of the moving bookcases created a border which subsequently disappeared. Before swinging one table of the workbench set-up against the wall, I extracted two stacked steamer trunks. One had a small selection of handmade sweaters, the other was chock full of nice, clean folded teeshirts. The motherlode! There were also two tweedy winter caps and two knit stocking caps, so those were pulled out to add to the hat collection now on partial exhibition in the forming main-floor library. (I have now moved more than half of the bookcase space I have intended.)
No...It's not entirely made of teeshirts. There are squatloads of hats, books, and a fair representation of stuffed toys. Oh, and Ivy had a 'thing' for containers, so I have bags, bags of bags, and baskets of multitudinous shapes and sizes. Only three ukuleles and a fistfull of various recorders and pennywhistles. And, only two spinning wheels remain. Oh, and let us not forget the wall of plastic airplane kits which buttresses one basement wall....I think that now numbers beyond 500 kits.
It is J-space. Keep in mind that I spent five years of my young adulthood packing mountains of refuse in to spaces too small to hold them. And then a long and storied career sorting, categorizing, and storing books, and learning how to maximize minimal storage space with innovative methods. Those skills don't die easy. I'm guess I'm just on a 'busman's retirement', shuffling books and displays around like a seasoned library rat.