We remember watching our mother roll out pie dough on one of these plastic Tupperware Pastry Sheets ($17.49, Amazon.com). They're printed with circles to help you roll out dough to the right size and shape. They are also helpful when baking any sort of bread; with a little flour this is a great surface for kneading, and it makes cleanup that much easier.
Vintage Tupperware pastry sheets are still to be found, and we've heard rumors that the old versions are superior. Here's a 1965 pastry sheet for sale on eBay for $4.99, and a child-sized 1979 version for $3.99.