My proposed idea.. 

My initial idea to start this whole project is that of an instore section (like the ball pool in ikea) where kids are dropped of by their parents to go and play whilst the parents shop around. 

For this I would want it to look something like this: 

Carrying the theme from the packaging and range onto the front of the instore section.
This would then be where the children would plant little pots given to them when they arrive. Those little pots are then taken home with the children.