When I was doing my student teaching, we got this idea from an English teacher. Students would have to pick 8 vocabulary words that they did not know. For each word, they would write the word in the target language, the word in English, draw a picture of the word, use the word in a sentence, and write a synonym or antonym of the word. This was a great warm-up or homework assignment. I encouraged students to pick words that they did not know and not to pick a word because it was easy to draw.