I suggest not playing this yet. Go play this instead: http://scratch.mit.edu/projects/1756941/. It has ~35 items, unlike the two items here. Spiritual successor to Creation Notebook. It's less like Scribblenauts, and more its own. I'm only working on the engine at this point. Type in square or triangle. Click the box in the upper left to create an object. Only square and triangle work at this point.
Changelog: v2 2013.07.02 Added better physics for objects, you can press t or r to open the input thing. v1 2013.06.30 Created. Added block to create objects with parameters. Added physob, the base for normal, non-interactive objects. All basic objects are this with different skins.