Stick with the bluegill idea. Buy the biggest ones you can get. Hybrid bluegill won't help your bluegill. Hybrid bluegill are aggressive, grow fairly rapidly, but are not a benefit to a bass population. Crappie are a no-no...fathead minnows would be a snack. Redear in Kansas are "iffy", so that brings us back to bluegill. More bluegill are probably better, so see if gift certificate could buy native bluegills. That would give you fish from two different sources.
