Due to the mass of possible combinations, we have on occasion observed things happen in the field that not even we, who created the game, could have imagined. (gonintendo.com)
Two little birds in a snowy countryside observe things around them that are similar yet different. (booklistonline.com)
I like your idea of a notebook, it sounds like a great way to be consciously more mindful of observing things of interest so you remember them for later. (pretraveller.com)