I'm really in this mode lately trying to encourage vocabulary retention. My 1s are currently learning about "faire les courses" or food shopping, so I did an activity that not only enhances their vocabulary, it also has them using the target language. It's an activity called "qui suis-je?".
I made cards for each food vocabulary word and tied string to it. Each student gets a food item behind them (like a backwards necklace) and they have to ask yes or no questions to their classmates to figure out what they are. Because they are French 1, we wrote a list of questions we could ask on the board in order to keep them in the target language. Questions like, "can you buy me at a boulangerie?", "am I red?", "am I a vegetable?", "do I say moo?"...things like that. They have to go around the room asking their classmates yes/no questions trying to narrow down which food they are. Once they figured out what they were, they turned the card to their front side.