Repurpose-rethink premade items. Yesterday on my way to the LQS i stopped at a thrift store to check out stuff. As a result of this board my mind was very open. Wallet pretty empty. Last time I visited this store they had a fabric section. I found piece I could not buy then. I also purchased valance that was 60 inches long and hemmed with an 18" hem which made width of fabric at least 36". In very good shape. I looked like it had never been used.

Here's my thoughts: I will preface this with it takes time and looking at every thing to judge if it will work. Most of the items would not.
Of course we all have heard of using men's shirts and blue jeans.
Large or any size women's blouses, kids clothes have great fabric designs and can be cut up. curtains, drapes,(lots of fabric to cut into) bedspreads & blankets could be sandwiched instead of batting same with terry cloth towels. Lots of fabric in skirts.. Pillow cases.
Las vegas has lots of hotels that are constantly changing & upgrading their linens; the old go to thrift stores or hotel liquidators.
Take your time, not everything in a thrift shop is where it is supposed to be. Many also have special sale days, like a senior day when there is an additional discount.
My lqs had exact fabric I went for.

If you budget is tight - open your mind.
Now to sew.