Here's a Word Search maker.
It's a Excel 2010 spreadsheet. You can print directly from the Excel sheet or paste from it into your favourite word processor.
It has macros enabled; the macro makes it easier to see what you are doing and to produce an solution grid (all the distractor letters are randomly generated, and are shown as white-on-white for the solution grid).
I'm sure you can do this sort of thing for yourselves, but you might find it useful if you haven't done it for yourself just yet...