I think a really simple one is colouring in - you don't need to draw anything but colouring in focuses your mind to the task at hand @outlander One I use is simply sitting in the garden (or at the door in the colder weather) and focussing on one spot. I am lucky enough to be able to see the mountain from my back yard so I often look at the mountain.
Maybe add in things like a nice warm bath, a cup of tea (or whatever you drink) - you can do thinks like laying on the ground and watching the stars in clearer weather or watching the clouds more lately lol
How about a theme to search for eg. blue flowers, red pands (you probably have done that already though lol)... and categorise them into folders on your computer for later reference....