The possession identified is the knives Crooks has in his room. These seemed significant to me because they were one of the only objects that he owns mentioned, and so this greatly reflects his general life. The few objects that he has, most being for work show that most of his life simply work, work, work. The other thing mentioned which really shows Crooks's environment is the broken harnesses being hung on the pegs on the wall, these shows his poor living environment because they just emphasize how big of a part his work is, he is constantly surrounded by chores and work he must do. This again shows that his character is not very happy if he is only influenced by work and nearly no social life, his mental health must not be very good, which plays a part on his character as to why he is so cautious as mentioned in the "SAYS" section.