Here is a part of my collection of unpainted HO figures. As you can see there are a few that got a start.
To populate the whole layout properly, I will need so many more than I have here. However, by changing my focus a bit and working more wilderness scenes into my layout,I will not need quite as many human figures. I will need to add a few more animals though.
I will be posting a list of sources for these wildlife figures very soon.