An idea using the sun as the natural resource :). I submitted another without the gradient so you can see the possibility for other uses. Let me know if this is the right direction. Thanks
Cool! These are really good - we like the 'global' one #31 and the one with the droplet in the letter #30 but without the sun. How about this: the first one with the lines but with a droplet in the I but make the droplet in 3 shades of orange/brownish? The white/light blue droplet suggests water and we do not have much to do with water.