my suggestion would be:
- armor case
- large map
- dogtags, shirt or at least something to wear!
- prima strategy guide or extra large manual
- Track IR -25% coupon
- maybe a little thing like compass, keychain or figure.
- AND! the coolest an artwork on the inside wich (if the expensions come) you can click on the other boxes and make your artwork biger and biger all the time!