Pick n Mix products

Hi Folks,

I am looking for way to create a pick and mix solution for a website based on ZC 1.3.8a

Imagine a store where you have a box, into which you can pick 9 sweets from a range of sweets in a particular category.

I need to be able to create a price for the box and the 9 sweets and group them together as a single item on the invoice.

Does anyone have a mod that does this or know how to get Zencart to provide this functionality.

I was thinking of a JQuery script with drag and drop into the box or something like that, but I dont have the experience of doing that yet...

Many thanks in advance
Greg