Well I kept it simple, but the only issue I have is where do I keep my beads?!?

Well I forgot about this thread, I never did drill any holes. I just took the lids off a few boxes to use as trays, and kept a few other boxes closed for storage.
Looking back on this thread I see how much I was over thinking it.
Thanks for all the advice, I just kept it simple.
I went to Walmart to grab a second cooler, so I could have one with singles and one with boxes. Walmart didn't have anymore of the cheap ones so I just used a smaller cooler I already had.