I Tadpoled the Gnolls into attacking the Zhentarim survivors guarding the box, then tadpoled their Flind leader into helping me kill the rest of her pack, then herself. She's got a pretty nice weapon with a major downside, though.
As for the box. Do you want to know what's inside?
No spoilers!
Just tell us how to open the damed box[lol]
[Edit] Or, if it's really awesome, tell us what is in the box but don't tell us how to open it.