OK, I did some checking and it looks like "The Quest" logo is not trademarked, and from what I can tell, the alphabet they used is not copyrighted. However the Doritos "Soundwave" logo is trademarked, so I'd probably have to get permission to use this which would be more effort that I would want to go through to get unless I was making hundreds of these boxes.
So as far as I can tell, I could legally make an additional box or boxes like the ones used in the event with the exception of the Doritos "Soundwave" logo.
The problem with this is that doing a "one-off" box like this would be a little tricky as I'd need to schedule a special engraving session for the different code rings which costs me more to do ($105) (normally I make boxes with Times New Roman fonts). But if I had say a dozen or more orders for boxes with this symbol alphabet, I could do it at my regular price (or close to it). Perhaps I'll make a limited edition set of say 12 of these boxes open only to people on this and a few other websites that have been following "The Quest". I wouldn't make these available on my website because it would be such a small limited edition batch.
It would really depend if there was enough interest in something like this to make it worthwhile to do. Otherwise I could still do it, but it would cost $105 more for a "one-off" box like this.
As you know from personal experience, these are not cheap mass produced items, so I can't really afford to spend hundreds or thousands of dollars on making these special boxes and end up not being able to sell them. I suppose I could take pre-orders for a period of time and then however many orders I got at the end of this period would be how many of these boxes I would make.
Do you think there would be enough people interested in something like this?