Ah! Seeing this project made me smile so big! What lovely work you're doing :) I used to find photographs of bookshelves blu-tacked inside a phone booth in the mall in my town. I'd collect them when I saw one every now and then, they really made my day.
I'm glad you enjoyed it as you inspired me with it some what with your envelopes on your blog. I wanted to do something similar but of course with my twist on it. I love the idea of leaving something in the same place every day :)... I might do that one day.
Thank you for your wonderful comment.