Everything is Illuminated Lesson Plan

What are the first three items pulled out of the box labeled "In Case?" What does each item mean to the character that pulled it out of the box?

Grandfather starts by pulling out an old pearl necklace. The necklace reminds him of a similar one that he bought for his wife when they first fell in love. Instead of this making him sad, Alex gets the impression that seeing the necklace makes Grandfather feel content.

Alex goes next and pulls out a world map from 1791. Alex reflects on how valuable the map must be. It also reminds him that there was once a time when the world was smaller. Not physically, but in what we knew. It was made in a time where you "could live without...