GD is my fave- strings 5 and 4 from a pack..
For LOW tone, EB, strings 6 and 5 from a new pack. For higher voices, maybe DA, the 4th and 3rd strings.
--- So, from one pack, you could have an EB and a DA.
Other combinations are in there. Lots of kids voices work well with the key of C - do CG with the 4th and 3rd.
I just experimented on a six string tuning the two small strings to AE. I thought it would be too high pitched, but son of a gun, it sounded pretty good.
Shane played an Ee: