What are good symbols in of mice and men?

like, tangable symbols. for example, i already have a cross for the sacrafices george made for lennie, a weight for lennies strength, ect. i need one more please and thank you :)What are good symbols in of mice and men?
Of Mice and Men - John Steinbeck





Study Guides.





http://www.shmoop.com/intro/literature/j鈥?/a>





http://www.bookrags.com/notes/omam/





http://www.sparknotes.com/lit/micemen/





http://www.lausd.k12.ca.us/Belmont_HS/mi鈥?/a>





http://www.schoolbytes.com/summary.php?i鈥?/a>





http://www.gradesaver.com/classicnotes/t鈥?/a>





http://www.cliffsnotes.com/WileyCDA/LitN鈥?/a>





http://www.pinkmonkey.com/booknotes/barr鈥?/a>





Additional Resource:





http://www.edstephan.org/Steinbeck/mice.鈥?/a>What are good symbols in of mice and men?
jar of Vaseline for curly.