Logo for a company that produces reusable & round to go boxes.

I need the Logo and 3 different designs for the beginning. The color of the round boxes is going to be Slate grey. It is a reusable product.. so it would be nice to have a hint to saving the world, like a globe and also perhaps a circle as the customers send the boxes back and use them again. The Logo should also be able to be printed on the slate grey boxes. The boxes are made in Germany or Made in Solingen. Perhaps you can add both versions to the Logo as well.

Feel free and surprise me with any idea that you come up with. If I am not happy with the first 3 ideas I will send you some simple ideas that I came up with that you can create a nice logo of...

I will send you the name of the company once we agreed on a deal. It would be nice if you have time today and send me 1-2 logo designs already. I also want the file so that I can work with it on gimp and with png and jpg and the name of the font that you used.

I want you to work on it until I am satisfied with one logo. So there might be 3-5 times that you need to redo the logo design.