The octopus is famous for its chromatophores, which allows it to change color, so why not make that in LEGOs? In this set I have made a 1/20th scale model of a Pacific giant octopus (Enteroctopus dofleini), made partially from small street sign pieces. This set comes with an additional 11 colors of the pieces, which are interchangeable with the default red color. (There are only 1 of each shape of pieces needed to change the color, because there was no way to fit all of the 72 square pieces and 24 triangular pieces of each color needed to change the color). Anyway, I built this just for fun, but I think this would make a great set because of how accurate it is, and because the dofleini is so well known.