I love participating in challenges. Why? It forces me to create on a deadline (for some reason I perform better under pressure). I often participate in challenges set-up by PaperTraders; if you are not familiar with this group I would encourage you to check them out.
In the meantime, some photos of a tip-in envelope challenge that I have completed:
|Envelope filled with ephemera and treats for my trading partner.|
|Envelope with flap open.|
|The back of the envelope|