What am I?

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.

I found that it worked really well.  They had to rack their brain for the possible vocab words they could be in order to narrow down their questions and then guess that they are.  One class did it perfectly without English, the other got into English a bit.  I tried to do it that if they heard someone speak English, they could take that person's card.  However, I didn't like that.  They ended up fighting and also it then made that English speaker even LESS likely to use French later.  I'm still trying to figure out a fix for that.