I have been drafted for some kind of swap I had not heard of before. Altered Envelopes. Participants in this swap are being paired off with each other and decorate envelopes that are being sent to the partner. There is nothing inside these envies (except a bit of cardboard for stability), just a pretty envelope. I was very concious of the fact that I use mainly watercolour type pencils and that ordinary store bought envelopes might not survuve the use of water on them, so I literally made my own from thin watercolour paper.