Mystery snack bags: Wealth Allocation

Here is a great lesson idea that can be adapted: http://ecedweb.unomaha.edu/lessons/popcorn.htm
The basic concept is this: take a bunch of brown lunch bags, fill them with different things ranging from popcorn to crumpled paper, to perhaps even coins mixed with paper.
Then, distribute them under the guise that they are donated snacks. Once students open them, you can discuss resource or wealth allocation in a variety of ways; this can be extended for trade, etc.

Social Justice Lesson Plans

OISE's Centre for Urban Schooling has some great social justice lesson plans that could be adapted for different courses. The economic and supply chain ideas would be great for international business.
http://cus.oise.utoronto.ca/Lesson_Plans_Social_Justice_Issues.html