Some of these little mini task things are really easy to do in Bitlash. Here's the application you described:
// two blinkers on d13 and d12 controlled by pots on a1 and a2
function t1 { d13=!d13; snooze(a1); }
function t2 { d12=!d12; snooze(a2); }
function startup { pinmode(13,1); run t1; pinmode(12,1); run t2; }
-br