EASY - Minimum 1 child
Put a chocolate egg or prize at the end of the garden (in a tree, shed or somewhere the child is familiar with). Then put a dozen or two dozen real eggs around the garden. (To avoid wasting the eggs, you can poke a hole at the bottom of the egg, using a steak knife, just big enough to drain the contents.) Bring the child out blindfolded, spin them around three times and send them to get their egg. To make the game 'egg'citing they must try and get to the end of the garden without stepping on and breaking the eggs. The winner is the first child to reach the prize with the least amount of real eggs being broken.
(NB: Make sure the child is wearing correct shoes for the standing on eggshells, trainer and wellies are recommended)