Sand Castle Mold

Thats my entry for the "Build A Castle" Challenge.
This Thing is built out of three parts: a mold, a bow and a shovel.
You can use the mold also as a pail to put water in it or bring other
molds to the beach.
After you've printed it you can put wet sand into the mold,
turn it over
and "Voilà" you have got your sand Castle.
All parts are modelled in Autodesk Inventor 2016 Student Version,
fell free to print and download.