Although you hate Mel, I will answer the question.
You can't really do that since each school's application is different and schools that require online recs would not accept paper ones and vice versa.
Since most of the schools ask pretty much the same questions or slight variations on them, I think the best way to go about this is to put together one document that includes all those questions and ask your recommenders to answer all the questions and save the document. Put the names of schools that ask those questions next to each one. Then your recommenders can simply copy and paste their answer as the recommendation form for each school requires.