A long list of different warm up activities, none of which involve equipment so they can be carried out quickly and easily.
Front to Front
Children stand in pairs. The teacher calls out "front to front" and the children have to get into a pair and stand 'front to front', i.e. face each other.
After about 5 different instructions, the teacher shouts "change" and the children have to quickly find a new partner and stand in the manner of the teacher's last instruction.
Other instructions will be: back to back, elbow to elbow, side to side, toe to toe, finger to finger, knee to knee, hand to hand, shoulder to shoulder. Mix them up too, e.g. finger to shoulder, knee to hip, front to back etc.