A lady at the post office taught me this trick and I have realized very few people know about it! You can turn a flat rate envelope into a pouch to increase the capacity. It holds more than a small flat rate box ($5.80) and about as much as a medium ($12.35) for only $5.60. So worth it! I do this all the time! Just fold the bottom both ways, and flatten it out from the inside, folding the corners and taping them up into a rectangular bottom. Secure with lots of tape. Happy shipping!
I love this girl's blog about thrifty living :) here's a quote from her blog: "Oh yes ladies and gents you did not read wrong. I am 100% serious. My family of 4 lives on about $14,000 a year. We are not in debt, and own our home and both our cars. Want to know how we do this all and still save money? Well I am going to share some tips that have helped us along the way."