Pronouncing “th” words with “magic ink”

Hi everyone and Happy Friday,
I am posting a photo of a simple chart of “th” words in my room.  After a mini lesson of how to pronounce the “th” in English which includes where to place the tongue, I use this chart as a “ticket out the door” for students.  Students correctly pronounces the words and off they go!  What are your ideas for practicing difficult pronunciation in English?

 We made this chart with “magic ink” and a Q-tip.  Just dilute bleach with water and use a Q-tip as your pen!  The shiny side of the construction paper doesn’t work as well as the other side, so check out your “magic ink” before the kids come!
 Happy Teaching! Lori