Nuts: walnuts, pecans, Brazil nuts, monkey nuts, hazelnuts, etc. Avoid almonds just in case as I've seen several sites that warn against them. Nuts should be unsalted. They're also very high in fat so feed sparingly.
Fruits: apples, strawberries, papaya, pears, bananas, cherries (pit removed), plums, peaches, blueberries (can prevent cancer), raspberries, blackberries, grapes, etc. Males can't have citrus, but it's ok for females. Mine have all had weird fruits like mango and carambola, and they just love it.
Beans: green beans, garbanzo beans, etc. Make sure they're cooked and don't feed too much; they cause gas that rats struggle to expel.
Coconut and veggie noodles are fine.
I hope that helps! Let me know if you need more info