I ring the changes between:
1 slice toast (I keep a loaf of Burgen in the freezer) topped with peanut/ almond butter and a smear of jam, marmite and cottage cheese, avocado, humous, or ham and tomatoes.
2 eggs, or one whole and one white, scrambled in the microwave with mushrooms, spinach, toms, sometimes a little blue cheese.
Yoghurt with berries and flaxseed.
Overnight oats - porridge soaked in milk/ juice/ yoghurt overnight, and then fruit and nuts and seeds added to it.
Boiled egg with marmite soldiers
Smoked salmon
Porridge, often with frozen berries stirred in half way through cooking.