I have a couple of Circle games they could possibly enjoy.
The 1st one is called "Good morning Mister Johns!"
The kids make a circle and sit on the floor. You can walk around, singing a song (optional), then stop behind one pupil. He has to stand up. Shake his hand and say "Good morning Mister Johns!" and the kid will say the same to you (I personally teach in the afternoon, so my students say Good Afternoon). Then both have to walk in the opposite directions around the circle, when you meet again you will both repeat the greetings and shake your hands. Finally, keep walking in opposite directions but faster to occupy the empty seat left by your student. So he will stand and start walking around etc.
Another circle game, maybe a little more complicate but fun:
Miss Lucy's Teaching Fun: CIRCLE GAMES - The Shoe Behind You
I hope I helped you,
Lucy