Basically it's going to be a shell. Like I mentioned earlier, it won't have working internals, so you can't create a functional grandfather clock or an engine. The constructs can physically move, though, so you can definitely create a shape of a car and move people around with it. Or make yourself a flying surfboard just for funsies. Moving externals are okay, so chainsaws and fans are fine. Make a snowplow to scoop people up in and carry them either to safety or to jail. Handcuff a bunch of gang members around a telephone pole or, better yet, a hardlight cactus with giant spines. I'd even make allowance for recreations of living things, though the size limit is still in effect so no projecting your own T-rex.