Brainstorming - Research Map

I think my project can be divided into two areas: postage stamps and alternative energy.

I've been researching a lot about different types of energy, but haven't researched that much on postage stamps, so I thought it might be a good idea to start investigating a little more in the world of stamps.

Some Ideas:

STAMPS

- Innovative and original stamp design

- package should be very eye-catching

- Special Edition

- Collectors and Specialty Shops

- Print in different paper? 

ENERGY

- global or local?

- Products: biofuel, electricity, heat and cooling, etc.

- Kinds: wind, solar, hydro, tidal, wave, geothermal, biomass, etc.

- Power of Nature?

- Nature + Household things