One of my presents last Christmas was "Alumilite Super Casting Kit". I have been thinking for a long time what I really want to cast. Finally I came up with an idea to make my own mannequin and cast it and then sew couple of dresses in 1:12 scale. I liked to work with the Casting Kit. It is easy and fast. What I didn't like that it was actually very expensive and you can't make too many projects with this kit. I found other sources to purchase the necessary casting products.
Here is my mannequin. Not perfect but I liked the shapes.
and here is my version of a house dress, c 1900.