Here is one of my concepts. I've gone for something that's fairly clean and simple, yet striking. Creating an icon that works well within the logo or as a stand alone element, one that can be used for things like favicons or watermarks.
The icon is a combination of the initial letters, "F" and "S" ... The F is in the negative space at the top of the icon, and the "S" slightly clearer at the bottom.
The logo is 100% so will scale well to any size, and works well in full colour and B&W.
If you'd like to see any variations then please do say.
entry 3 i like would like the s to be less obscure maybe a subtle color change also do not like star on tail of either entry open to something there but not sure what
entry 4 ok probably not as much potential as 3 again i like the subtle just shown it to a few people and very few got the s