I like sending my students home with articulation homework that doesn't look like word lists, but gets to the point. Some of the words included are Halloween inspired. Included are 26 pages of cards that include the following sounds...
Initial, Medial and Final /s/
Initial, Medial, and Final /sh/
Initial and Medial /r/
Vocalic /r/ "or", "ar", "er", and "ire"