Thinkin' Halloween

I'm already in full Halloween mindset mode. I was wanting to hand make costumes this year and I need more lead-time than the average crafty mom (which I totally am not) My mother in law is awesome and said she'd like to make Emma's costume this year. Yay! Wyatt is a bit more difficult. Thank the Lord that he has not suggested "Thomas the Train" for a 3rd year in a row. No no no..... First we have
"A carrot."
"A Carrot ? Wyatt, who do you know that has been a carrot costume before?"
"A man from Russia."
"A man from Russia?"
"Yea, and he came to Racine to trick or treat all the candy, then went back over to Russia and called everyone in Racine to tell them thank you for all the candy. Then he put the phone back on the charger. So yea, I want to be a carrot."
"Oooooook."

Then.... we have...
"A Circle."
"Just a plain circle?"
"No, I'd like to be a big yellow circle."
"Ok, so a smiley face?"
"urgggh, No! Just a big yellow circle."
"Alrighty then."

So that's what I have to work with. Any suggestions ?
Ha!