It is no bake clay (even after sitting for over a decade it is still soft and oily, which is why it is covered in dust), I found that out the hard way. The first version melted in the oven.
Yikes, Hobby Lobby. But that's interesting about burnishing with a paper clip. I didn't even realise one could do that. :o
I do have some Sculpey polymer clay. I've found that it can crack over time, though, so might be suited to more temporary projects.