Here's another one I forgot about.

You can use a weighted wooly bugger (fly-fishing fly) on a spinning/casting outfit as well as a flyrod. Must be weighted or a split shot added above the fly. I like white or black. I tie these myself, but you can get em at Bass Pro, Cabelas or Sportsman's Warehouse.

These can also be deadly. Not something most non-fly fishermen would think of.