[The Saucepan Man]

First Age? Conceivably, but highly unlikely
Third Age? Yes
Dangerous? Not as such
Owned by one of the Fellowship? No
Is it a concept or idea? In a way, yes.
Is it a song? Yes
Does it have a specific name? No
Is it made up by someone? Yes
Made up by a hobbit? No

Galadriels Lament? No
Made up by a Man? No
Made up by an elf? No
During the Chief Days? Possibly, but probably not
Does this concept or idea, or such, involve the theories of an Elf? No