AND the cardboard gets soft. The back of the head is just made from hot glued cardboard. I recommend using foamular and making vents for yourself. Swords, guns, fantasy gunblade are among the most popular Halloween weapons props you can 3D print yourself. What other items do customers buy after viewing this item? Step 4: That’s It! TORONTO – Carling Harris of Ottawa has been dressing up as pop-culture characters at conventions, a worldwide hobby known as “cosplay,” for eight years and has noticed a huge trend lately.