Mail art inspiration - Pinterest swap

For this swap, you need to have a Pinterest account. If you don't have one, head over here and create one!

Create a board named "Mail art inspiration" or something along these lines and fill it with at least inspirational 20 pins. The pins should either be pictures of beautifully decorated envelopes, letters, postcards etc. that might inspire us to create our own versions, or they should be links to tutorials (envelope templates, downloadable stationery, various how-to's etc.).
The pins should not be just pictures of products you can get in a shop. This is not a wishlist board, but a board that should stimulate our creativity.
You are going to send a link to your board to 5 partners.

Newbies welcome with well-filled profiles. No unexplained 1s or 3s in the last 6 months. I reserve the right to ban any questionable swappers.

Happy pinning!