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The Martians' only recorded vocalization. While the meaning is unknown, it is used while the Martians are destroying stuff, murdering humans, fighting on land and sea, and (spoiler!) while they are dying. So it may translate roughly as, "Up yours!" Marker, Sharpie, gel pen, ink.

Out of their machines, Wells' Martians are basically big heads with tentacle "hands" right next to their fleshy-beak mouths. Which really can't be sanitary -- oh riiiiiiiiiiight. The first version I did looked a lot like an Angry Bird. So I double checked the description, and basically that's them. There's a giant "ear" membrane on the back of the head that may or may not work in Earth's atmosphere, but since they were recorded as partly communicating by sound, it's not a leap to believe that it did. Ink, brush pen, marker.