I like the 3X3 square that has been made with the letters using End All PAC (s). The simpler the design the better. Instead of making individual boxes around the letters could you make one box around all the letters using the line through the dollar sign? Could you switch the background green to something lighter, like the color on a dollar bill, and use black for the letters, and maybe a darker green for the dollar sign? Would it be possible to see designs with serif as well as sans serif fonts? Could it look like the logo was "stamped" or created with a screen print?