Did you ever look for a simple calendar online, one you could download or copy, and finally decide that no such thing existed? If you do a search for "free calendar" or "printable calendar" you will see hundreds of sites but it may be difficult to find just what you want. However, there ARE many free generic calendars on line and knowing how to look may help zero in on what you want.
Not all letters in the grid may be part of a word. Moreover, given that words can cross and overlap. Combined with the jumble of different orientations and positions, it may be extremely difficult to locate all of the words hidden in the puzzle.