Make a Transformers’ Soundwave Costume from Cardboard | Make:

For Halloween in 2014, my son, Ben (then 5), and I built his costume together. In previous years, he had worn the usual toddler fare — store-bought monkey, dragon, and Buzz Lightyear costumes — but last year he found inspiration at the North Carolina Maker Faire, in the form of a costumed exhibitor dressed as Soundwave, the Decepticon from the first generation of Transformers.