Quick project done with mailers I already had and a roll of double sided tape from Dollar Tree.
I often sell and ship clothing, and at times when it's something like a jacket,
the mailer isn't tall enough to fully close. This only happens once in a while so buying
a whole packet of mailers seemed wasteful. Not sure if the problem is widespread enough to warrant
a separate product, but having this quick fix for those specific instances seemed to have potential.