the third point on this site give an example of an activity which an be played with intermediate level students. This is good activity to make students to express ideas in limited time.
Wow amazing warm up activity! if you don't have time to make beautiful name pads, then this activity is just what you need. This will help your students and you to learn each others names and at the same time to enrich with new vocabulary. Another alternative to this, is writing down names of fruits and vegetables on the board beforehand, in order to help your learner to feel comfortable while participating in this game/activity.
I liked this one very much. If you want to change the rhythm of the class and engage you students in more active and language using activity, then this is what you need!!
This can be worked with high beginner students.
This is an amazing interactive in-class activity, which aims at practicing Past forms. This could be work best with pre to high intermediate level students. (We can even play this game in our class, will be very interesting, just for fun)