A voucher, flowers, chocolate, photo frames, mugs, i once recieved a lovely hand decorated book,
Are the three in the room with him at the moment, or different rooms, i only ask because a few parents (at my nursery) that have left recently, have singled out specific staff completly ignoring all the others who have looked after their child, and it can be quite hurtful to others when this is done.
e.g two examples -
Parent one - Child been in nursery since a baby, when she left, the parents gave the nursery a gift, and a £5 gift voucher to every member of staff that had looked after the child. We all felt appreciated.
Parent two - Gave out gifts to the last room the child had been in, and wrote a letter to the nursery about how wonderful it was being here for the last 4 years, didn't want to name any names but x, x and x were the best anyone could ask for to look after their child (these were the people who recieved gifts) the parent had never given gifts out in the rest of the childs time at nursery, even though lots of us had looked after him.
To be honest most nursery staff do like recieving gifts, but i would be very careful how you give out gifts, and what you give.