The Omaha Bar Association allows 3L students to join for free and attend many of their events. Simply register to become a member on their website: https://m360.omahabarassociation.com/frontend/portal/SignupOptions.aspx
There is also a newly formed OBA young Lawyer's Division which is hosting an April 26th event to watch Creighton vs. UNL Baseball. The reception and game are free for OBA members and guests. This is a great time to join!