My favourite Tip:
Paper on the floor!
This is a very good exercise to finish the class.
Repeat this chant (or sing it to the tune of Frére Jacques)
I see a paper (2)
Pick it up (2)
Throught it in the litter bin (2)
Tidy up (2).
I´m sure your pupils will enjoy this activity and tidy up the classroom.
(From "PRIMERA CLASE" Mar Bermejo, Primary and Pre-school English Teacher)