My chapter didn't do too many awards while I was active. Here are the ones that I can think of though:
Sister of the Month: goes to the sister who does the most for the chapter during the month
Smartie Pants Award: goes to any sister who has earned an A on an exam or on a project
Sister of the Year: the archon decides who receives this award. Usually the sister has shown outstanding devotion to the chapter and has gone well beyond her call of duty. I received this award two years ago, I am display it proudly in my room with my paddles!