At work, we sent a packet (letter-sized envelope filled with letter-sized things) out to a bunch of different people who had reached certain sales goals in our company. They have a bit of pomp about them, so while calling it a 'packet' or 'kit' is accurate, it comes up a bit short in my mind. 

Looked up synonyms...'sachet' was an interesting idea, but its definition didn't quite seem to fit and it feels a little TOO pretentious :)

Any other ideas?