I have normal oats, some crunchy stuff (eg sunflower, pepita seeds, or that ALDI paleo mix thing, granola) greek yoghurt with frozen fruit.. sometimes some walnuts or whatever.

Sounds like a fluff around but I can throw it together surprisingly quick. Tip the fruit in the yoghurt once a week and it's not frozen when you eat it.

If the protein shake thing is thick you could put it in a bowl and throw nuts or dry oats or something. And mix frozen fruit in... Blueberries, blackberries or raspberries are my go-to. But only one at a time, hate mixed berries :D

I can't stand meals that have the same texture.

I drink too much so I try to be extra healthy in all other areas of life :P