This scavenger hunt is all about the head and face. You can use it multiple times!
Your students will be up moving and creating a visual relationship with the picture of different parts of the head/face (la cara y cabeza) with the term in Spanish. This will take you 5 minutes to put together (print, cut some straight lines, add letters to the font and fold 20 "posters" in half). The longest amount of time spent will be hanging the posters up around the room...and I'm sure you've got a student who would love to do that for you.
You just print, cut along the dotted lines, fold in half, put the letter from the inside flap on the outside, and hang up the "afiches."