Since she's at daycare, I'm guessing that preparation is a big concern. So, items like scrambled eggs are going to be too time-consuming.
My recommendation would be items like fresh fruit, granola bars (Clif makes kid's sized bars that my kids LOVE and can get them at Sam's Club), NutriGrain bars, Danimals yogurt smoothies (our kids drink with a straw, but they're thin enough, they could be in a sippy cup). You could also make smoothies in the morning and have them in a cup for her when they serve the breakfast.
If space isn't a concern, I'd purchase some frozen waffles and sausage. They're not the healthiest, but it provides protein, and the Special K waffles really aren't too bad in terms of carbs/calories.
At her age, the only restrictions in place from the American Academy of Pediatrics are foods with a known family food allergy or those that pose a choking hazard.
Good luck!