39. Respect Your Mailman
In an age where digital communication reigns supreme, the art of sending mail through the Post Office carries a quaint charm, along with the price tag for stamps. Yet, for the cunning and cost-averse, there exists a postal loophole as cheeky as it is dubious: the reverse-address gambit.

By addressing an unstamped envelope to yourself and listing the intended recipient as the return address, you can bet that envelope will get where it needs to go. This trick, while undeniably clever, is the snail mail equivalent of sneaking into a movie by exiting through the entrance. Maybe just pay the few cents for the stamp.