What do you guys do with all your "cookie scraps"? You know, the stuff that's too tough to roll out again? I sometites press mine into a baking pan and make one big cookie and let the kids decorate it. 
I was thinking of using them as a cheesecake crust or a pie crust. Do you think this will work? 
how do you tell when it is too tough to roll out?
Experience.
Make half a batch and experiment.
there's a delicious and easy berry dessert I seen on semi-homemade.
mix a can of apple pie filling, a bag of frozen mixed berries-thawed, you can add an additional 1/4 cup of sugar...stir. Divide mixture among several custard dishes. it actually calls for the rolled cookie dough from the store...but...since I don't buy that, I use various cookie doughs ...snickerdoodle works well too. anyway...
pinch off little blobs of cookie dough and place them on the berry mixture(sprinkle with some large crystal sugar if desired)bake until cookie dough is golden.
remove from oven and allow to cool a bit oooooooooor...remove from oven, plop a scoop of icecream on top and serve.
the remnants of rolled cookie dough can be frozen and used for various desserts like this(I would label it as "......scraps"
I use leftover dough to make sample cookies to decorate for my website of cookie cutters that I have, but just haven't had an order for yet, or I just give extra cookies to the customer. I've never had any scraps that are too tough to roll out though.
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