The value of each piece will differ, based on craftsmanship and rarity, but in general, something like a shell-casing vase can be worth up to $500, while a trench art lamp has previously sold for ...

U.S. Poet Laureate Ada Limón has written a poem that will fly on NASA's Europa Clipper, which will explore one of Jupiter's moons. And you can add your name to the poem.