Creating a Bundle

Hi,

I hope someone can help. I've been trying to figure out the best way to about letting customers build a bundle to save on buying badges individually.

I have around 110 badges of a particular theme, and I want buyers to be able to pick any four. I thought about customisations, but that would create a very long dropdown list and it doesn't give you a great view of each badge you're buying. It also means creating hundreds of preview images!

Your ideas are welcomed! Thanks.