I think it's mostly fabric I've purchased that I thought I could match up to something else and make a gorgeous, bright quilt with, but then I couldn't find the right matching fabric or pattern to make it shine. Usually, it's something I bought to take me out of my comfort zone like others keep recommending I do and it's not a good idea. Unless I buy the matching fabric at the time or I have a pattern/design set for it at the time of purchase, it just sits there. I've also gone crazy and purchased too much of some fabrics and after making a quilt or two with it, I still have more. I'm now making more quilts, some just lap size, to use it up before I buy any more fabric and I'm making new rules for myself so I don't do this again!