Mail Art - Creative Envelope Re-use

For this month's GPP Street Team Crusade I'm sharing some ideas for creative envelope reuse rather than making anything that could qualify as Mail Art as such. The photos show envelopes that have been altered by having flaps repaired, old addresses covered up etc using cuttings from magazines etc. I often design my reused envelopes to match a homemade greetings card or homemade notepaper. If I'm sending someone a book through the post, the patterns or pictures on the envelope may well match the theme of the book.