I created this word-search as a warm-up activity and for some reason it's incredibly difficult! The words are listed in English but in the puzzle in Spanish. There are 40 vocabulary words in the puzzle and it even took me awhile to solve it!
We ended up making it into a game in my high school class. For the first 15 minutes, students were not allowed to use any vocabulary sheets, etc. to find the words. The student who found the most words at the end of 15 minutes would receive a prize. Then I let students get out their vocabulary sheets and the second prize went to the person who finished the entire puzzle first.