Is there a holloween costume you have always wanted to do, but haven't because it would be too elaborate or expensive?

Ever since I saw the first Predator movie as a kid I've always wanted to dress in a realistic looking Yautja costume for holloween. Complete with a mask with light up lenses and can make the clicking noises and the roar.

Is there a holloween costume you have always wanted to do, but haven't because it would be too elaborate or expensive?
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