Walking on grass. In my opinion could be also used for dirt, that why it's called "soil". You should play with volume on this one. Background noise removed as usual. Enjoy!.
Walking on a wooden floor: bare feet. Recorded with a zoom h2 in a basement of a house: a large wooden table placed on a carpet over concrete. Normalized with audacity.
Me walking on a metal grate in hard soled shoes. Some of the sounds are unpleasant but most are salvageable if you are looking for a casual walking sound.
Walking stairs with shoes: various speed of walking with heel shoes up and down some wood staris. Recorder: zoom h4n with the internal mic on 48khz with 24bit.