When I was 6-7 years old I once have put trolls upon pots:
(I hope you can make something of the pictures)
Something else I had back then was this face printed on some kind of pantyhose what was then filled with soil.
When giving it water grass grow like its hair
Like this but a bid less advanced:
Might be a nice theme to work out, but its harder then it seems...
As you can see you can even pick a hair cut/cut one yourselve