This is fan art derived from SparkyButane's most excellent work! I laid in an internal surface that doesn't need support, and drew up a filler for the top of the cone. My first cut used two side fillers, but I built them into the current model, since they don't mess up the no-support thing. I suggest some felt and craft foam to make it fit your head and not be too uncomfortable. In case you want the whole effect, the yellow coveralls came from Amazon; just cut the hood off. The DEVO logo and "belt" are gorilla tape (stick it on waxed paper to cut it). I highly reccomend adding a costume fan so you don't die of heat prostration in the waterproof coveralls! I reinforced the fan hole with clear packing tape on the outside and gorilla tape on the inside. https://smile.amazon.com/gp/product/B0777C465W/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1 This fan works well and can be plugged into a USB power brick, which is nice! https://smile.amazon.com/gp/product/B01N491CCN/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1