glucose test

Kaitlyn
Im currently  24 weeks and have my glucose test in 2 weeks. My dr said i do not have to fast, just as long as i dont eat a dozen powdered donuts that morning lol.
What are some things that i can eat for breakfast that wont interfere with the test. i would HATE to fail my 1 hour because of something i ate and have to do the 3 hour for nothing.  
How long before the test should i eat?