Letters

Tyson keeps all of the letters he gets, other than bills and junk/advertising mail. Tyson has mail from him army days, from his owners, from his brother, and from his friends.

Tyson thinks that letters are special, that it matters that someone took the time to write or type it out. He keeps the letters in a box under his bed, where he keeps most of the things in his apartment. 

Tyson takes his time writing letters, making sure that it is neater than his usual slanted, scruffy writing and often using specific stationary for specific people. He takes his time with letters.