Finding any cache is satisfying but, if you have junior cachers in tow, finding one with SWAG makes it particularly exciting.
You're looking for an egg box. It contains a log and some items intended for chidren to swap and enjoy.
One of my few peeves in geocaching is tat - the items in the cache are things children would be pleased to find. Please, do not take them and leave a penny, a single playing card, a bottle top, business card, etc. Leave something that will bring a smile to the next child.
The cache is hidden where children can reach it.
This cache is placed by kind permission of the residents. They welcome you to access the cache on foot but please do not park on their drive: the lane opposite is very quiet and would be a good place to park if coming by car. You will not need to go more than a couple of steps onto their land - you are looking for a part of their property that the public can access. (All will become clear when you get there!)
UPDATE: The inspiration for this themed cache was the large sign saying "eggs for sale" that used to be at this location. The sign has gone but the cache remains.
Thanks for sharing. 
*** Congratulations to Gray Glove on the FTF. ***