How can I make tiki torch holders from PVC pipe or equivalent?
PVC pipe especially schedule 40 would be super strong.  Attach them to the fence with some stainless steel hose clamps.(hardware dept)  PVC  is so easy to cut, any saw will do. If you go to Home Depot, they got saws you can use in the millwork dept.  Just cut up your lengths there.  Case closed!  lol