There are many websites that will create crossword puzzles for you. All you have to do is enter the words that you want included. My favorite that I have found is at:
This can be used for any subject that you want to work on with your kids. If you want some that I have already created, look in the Worksheets section. There are crossword puzzles for semantics, syntax and articulation.
**Note: You don't need to change any of the settings, although you might want to change "remove spaces in words" to "no."