Trick or treating, she was somewhat of a local celebrity and as you can see she got some bonus candy from people who wanted to try out the candy detector some more.
I sketched out a few concepts. The hardest part was coming up with a helmet design. I wanted a boxy, retro look. For a four year old, I didn't want anything heavy that her neck would have to support, so I opted out of separate piece helmets and went with one that was supported by the torso with a big "mouse hole" opening for the face. This also allowed her the best vision. A lot of cool helmet designs obscure vision a lot. I still ended up having to help her navigate stairs and walk past curbs and other tripping hazards because she couldn't see her feet.
I ended up not having time for features D and E.