Everyone thinks that paper and printing ink are the most important supplies in the office.What good are they if you can't get the finished product delivered to whoever and wherever. From organizing my home office to mailing in my monthly expense recepts I depend on these tried and true clasp mannila envelopes. Staples carries them in all of the right sizes so I never waste postage. I like to think that people still appreciate thriftiness when it comes to using office supplies.