FreeDailyCrosswords.com offers over a year of archived crossword puzzles that may be downloaded in PDF format for simple printing free of charge. These crossword puzzles are available both blank and with solutions printed and contain no advertising content.
There are other sites that offer free printable crossword puzzles. OnlineCrosswords.net posts seven new puzzles each day which may be freely printed or played in-browser, though the archive of puzzles from 2014 must be purchased. In addition, Printable-Puzzles.com offers a new printable crossword puzzle each day and maintains a brief archive of the previous few days' puzzles. More puzzle sources can easily be found online.