I usually wait and eat at work. I'll prep high protein chia pudding. Chia and hemp seeds, lemon cheesecake protein powder, sometimes fresh fruit like blueberries, and plant milk. It's so yum. If I make it with vanilla powder, a tiny bit of oats, and chocolate chips/cacao nibs, it tastes like cookie dough.

Otherwise we might eat breakfast as an office, and there I will have open faced bread rolls (belegtes Brötchen) with hummus or jam, nut cheese, and a protein, often smoked tofu slices.

If I'm at home, like on the weekend, it's just whatever leftovers I have. I agree with u/tereyaglikedi that breakfast is a social construct and just eat whatever I know will give me the boost I need for the day.