I meditate everyday when I walk or ride my bike. I don't try to notice things, but I can't help myself from seeing so many things. I notice things like bees flying beside me as I whizz down a trail, or just how fast birds fly. I notice the roses when they are open, and at night, when they are closed.
I believe outdoor meanderings are terribly important to a life. We weren't born to live so much of our lives indoors. We talk about how we must protect the environment, which I find ironic, because we have created an artificial environment around ourselves that insulates us from the real world...from being meditative.
My neighbour has a mosquito netted enclosure around his deck so that he can sit out there and enjoy nature. He gets to survey his property, his manicured, fertilized, pesticized, perfect lawn through a fine mesh screen. He drinks his rye and coke, pops a heart pill, and wonders why his derelict neighbour (me) ruins the neighbourhood by allowing weeds to grow.
Oops, a tangent. Oh, yes meditation.

By enjoying life at the pace it was meant to be, I believe that is true meditation. If we are always in a house, in a car, in a building, on an artificial lawn, we can't really delve into the extraordinary things that will pull at the meditative part of our psyche. So, meditation is an inherent part of our psyche, something natural. At least, that's what I think.
Basso