I sent a letter to my mother
A group of children sit down in a circle some distance apart, a child is chosen to carry the ‘letter’ (an envelope). The child then runs around the outside of the group (circle) as everyone sitting down closes their eyes and sings:
I sent a letter to my mother on the way I dropped it (the child who is carrying the envelope drops the letter behind one of the other children) someone must of picked it up and put it in their pocket.
On finishing the song the children sitting down all look behind them whoever has the letter picks it up and tries to catch the person who dropped the letter before they get back to the vacated seat. If the person who has the letter gets to the seat she gets to be in again, if she gets caught then the other person has a go at dropping off the letter. For younger children (under 5) it is best to just take turns anyway.