-empty can or jar (must be a straight cylinder)
-copper flashing or copper sheet like this
-vinegar
-rhododendron plant food
-construction adhesive (if not using adhesive-backed flashing)
-heavy duty cleaner (if using polished copper)
-polyurethane (not shown)
Tools:
-spray bottle
-funnel
-tin snips or other device to cut metal
-ruler
-marker
-abrasive cleaning pad
-safety devices (gloves, mask, goggles)