Here are some "decora" style switch icons. They are meant to be used as either the full image on a 1 wide by 2 high single button, or each half on single touch square sized buttons.
Because icons can be switched under program control, these provide a handy way of indicating status too, even if the switch is turned on or off by another signal source. For this reason, it would be best to use these icons with code of the type:
IF X10 Status/Cmnd Pair...Turns ON THEN Set Displayed Icon... upper half on THEN Set Displayed Icon... lower half on IF X10 Status/Cmnd Pair...Turns OFF THEN Set Displayed Icon... upper half off THEN Set Displayed Icon... lower half off
Make sure you check the "hidden border" box for proper display.