This one makes me think about food. I'd definitely rather make chocolate chip cookies than buy them and I'd rather buy puff pastry than make it. Outside of food ... hmm. That'll take a little more thinking. Here's one: I'd rather make my own little photo studio with white foam board and a window than buy a photo light box (even though I sometimes lose a day to overcast skies) and I'd rather buy (or subscribe to) an editable website template than make my own.
How about you? What would you rather make than buy and vice versa?