You need an ultralight spinning outfit with 4 pound test line.
For topwater:
Tie on a 2" Rapala or Rebel minnow. In the back eye of the bait tie on an 18" leader. To the end of the leader tie on a bream popping bug or about any dry or wet trout fly.
For underwater:
A 1" or 1-1/2" twistertail grub on a 1/32 leadhead is deadly. Also are tiny Roostertails, Mepps spinners, Beetle Spins, and spoons.
Bluegill can be finicky, but at times they will hit anything sized to them.