I nabbed a 100,000 personal stun gun off eBay. It was like 10 bucks plus 8 bucks shipping. Took it apart and put the guts in your typical radio shack project box. Coming off the 2 electrodes is thick sheathed wire from CRT flyback circuits (Crack open any old TV or computer monitor and you will see it suction cupped to the glass tube). These go to 3 sets of screws wired in series with the electrodes screwed into the PVC pipe. Gives a very hot spark, several times per second. Ignites my propane every time. Runs on a 9V battery.
http://i371.photobucket.com/albums/oo151/andrew61987/P1020850.jpg
http://i371.photobucket.com/albums/oo151/andrew61987/P1020851.jpg
(Before I added the 2nd and 3rd spark gap)
http://i371.photobucket.com/albums/oo151/andrew61987/zap.jpg
