Get into making small things. A nice purse for yourself would be a real treat, and you can take your favorite fabric wherever you go! How about wall hangings, place mats, mug rugs, or a cover for your computer laptop? Or how about looking at kitchen stuff -- so nice to have some of your favorite fabrics around to see and use daily -- appliance covers, pot holders, casserole covers, hot pads, trimming some kitchen towels? If you have plain curtains or blinds, how about a valance for the top made of favorite fabrics. Just think small and useful!
You see, I have favorite fabrics that I don't want to give away either. I use them to make "quilted treats" for myself. And I think that's great! With all the work we put into quilting, and all the gifts, family quilts, charity quilts, etc. that I'm always making for someone else, it's really nice to have these little treats for ourselves! So don't feel selfish about it; you've earned it in spades!