Start using the tools that's already there. You dont have to but a whole bunch of stuff to do sweetart. Just go out to a beach or a sandbox. Pick up a stick from the ground and start drawing. And if you want to be more ¨advance¨ start buildig your things in 3D. If you're really good at it then you can start entering competionions in sandbuilding. Or start your own contest down at your own sandbox/beach.

Bonuslinks: Sandcastles
                    World Of Sand Sculpting


A Crocodile drawn in a local sandbox.