The university is fairly close to the airport. I would probably take a taxi. There are casinos in nearby council bluffs, iowa if you like to gamble. There is also the Henrly Doorly Zoo with it indoor rain forest and desert dome exhibits, as well as an IMAX theater. You may want to check out the Old Market in downtown Omaha also. If you get bored and have a car, cruise on Dodge Street and look for a race.