Solar Stik is a company that makes portable solar energy generators and solar/wind hybrid generators.  In the portable power market, solar and wind has a profound impact on sustained power delivery because the most expensive cost in portable power is transport and storage of fuel.  Solar and wind have no support costs.  One of the benefits to Solar Stik's design is that their versatile systems can power diverse power needs, and are not narrowly designed for specific technologies.  They are easily transportable and can be folded down into boxes that can be checked on an airplane.  These benefits provide the ability to deliver power to remote locations or regions where transportation pathways are compromised.

They call it mini but I am putting it in the micro category.

Handheld wind turbin with battery as well as solar panels.

http://hymini.com/html/HYmini.html

Might be something good to add to the demo kit.