a simple approach... there are some things one could do with the square in the middle, change it into a 3.5" disc (a bit outdated though) or put in TS (like in a periodic table) ... whatever floats your boat.
Not a bad one. Could you please provide this in a bigger size? (you can add "sample" background, I just want to see it better)
Everything can be modified - colors/combo/font and all that. The square can also be modified to display TS rather than just T Love it, Hate it? Feedback and criticism is always golden!