Some kid in my Senior HS class, a few years back, dressed in a "stoplight" costume.
Seriously. Red, Yellow, and Green 'lights' on a large cardboard box.
...the catch, he forgot to put in 'armholes'
It became a chore to open doors, enter classes, and just lug that thing around.
But damned, looking back at it, that costume owned.
Myself this year?
Ugh. Argh. I'll get back to you. I have no ideas, or intention of leaving the house this year/knowing where I'll be.
That dictionary one made me crack up.
Thanks for that one!

-give out dictionaries instead of candy?! My own little twist on that, but it may be costly. Haha.