I'll second the lemon homemade pasta. Add some basil, parsley or rosemary , or herbs of choice - lemon pepper is good too. Homemeade is so good, you only need to add butter, s&p (to taste) and fresh grated Parm for your sauce.
Another twist - a little time consuming - make three diff flavors i.e. spinach (Green), tomato (Red) and Lemon (white/yellow) or plain dough. Place the three different colors/flavors side by side & run it thru the machine. After about the second or third press (tightening the rollers as you go), you'll have a striped pasta dough. You can use that for ravioli or run it thru the machine to cut spaghetti-like strands. Woila - you have a combo of flavors and colors.
Re diff shapes - try making spaetzle - prepare the dough and rub it along a box grater - the side w large holes into boiling water. Serve with butter & nutmeg.
Wonder how the dough would turn out if you added some red wine?
Bought an interesting contraption from QVC, but haven't used it yet. Basically it's a plastic cup -- you add the flour & egg, smoosh it up w an attached pestle-looking thingy. Then you can untwist and change the bottom for different shaped/sized holes and twist the dough out.