Seeing as most of the bowls are taking on corporate sponsorships in their names', I imagine a Mississippi-based company or a company with a vested interest in MS would be the main sponsor.
Mossy Oak Bowl
Nissan Bowl
Bancorpsouth Bowl
CSpire Bowl <<<---- probably most realistic
Trustmark Bowl
Hancock Bank Bowl
Bryan Bowl
Ergon Bowl
If they were to go solely on something geographically or culturally tied to the region (which I wish all bowls would revert back to), there are endless possibilities.
Delta Bowl
Pine Belt Bowl
Gulf Bowl
Catfish Bowl
etc etc etc...