Sharp Walking Tusk= A tusk from an animal like a walrus, elephant, narwhal, or some imaginary creature.
Pack Snail= like a packhorse but a snail. A giant snail that can carry equipment in packs.
Beetle Lantern= A lantern made from beetle shell, or maybe a glowing beetle in a glass jar. It is open to interpretation.
I generally let the players define things that I have left vague.