Hard to beat an envelope made from Spongebob Squarepants wrapping paper.
Thanks Truman! [Truman Bentley Jr., sit-down comic.]
Next to that is Truman's Newsletter.
Does he really make one of these every day?
Also included inside the Spongebob envelope were a few pages of cut'n'paste stuff - many copies of Truman's address, and some of his correspondents' addresses, copies of notes people have sent, and a Kapreles drawing.
P.S. Another envelope from Truman arrived the same day, much plainer looking though. Inside was another Newsletter, this one on day-glo green paper.