I like to put half almond milk, half coconut milk into my coffee. Drinking black coffee gives me a stomach ache. Sometimes I put a little vanilla extract in, spices, even pumpkin puree. I like "golden milk" and it's good in coffee. I just make the golden milk without the sweetener. You can also make a really strong tea with things you like, such as mint, and then put that into your coffee.
I really like the NutPods that LadyM mentioned, but I am not sure what it's like to get that outside of the USA, especially since you're already halfway through now. Also, as she mentioned, bulletproof coffee is also good.
One of the lunches we liked to have here, and maybe it would be a good breakfast, was fried eggs over turkey, with slices of avocado and tomato on top. Sometimes I put mayonnaise on top too.
I also like to chop up some onions and vegetables (usually peppers), and then potatoes or sweet potatoes, and fry them. Then I scramble an egg and add it to the pan, and cook it as well, so that it's all one big mixture.
Also, these egg cups are also really yummy: https://familywholesomerecipes.blogspot.com/2017/10/prosciutto-wrapped-mini-frittata-muffins.html
I saw you were struggling with making your own mayonnaise. Do you have an immersion blender? That's how I make mine, and it turns out every single time. Here's my recipe: https://familywholesomerecipes.blogspot.com/2017/10/mayonnaise-adapted-from.html
I saw that too! Glad you asked this. I was thinking, did I miss something and a cranberry is a legume?
I wonder if whoever controls the content of that page can update it to say "cranberry bean" so that it's not so confusing!