We've been trying to come up with Halloween costumes that depict idioms. 'Raining cats and dogs' is already being used. It was suggested wearing something to show 'We've come to a fork in the road' where I could wear a dark t-shirt with masking tape lines to show a road and then stitch a plastic fork in the middle of the road. Problem is, I don't think that's really an idiom, because a road can literally divide up into two sections.
A couple of years ago, I was a 'smarty pants' by taping lots of packages of 'Smarties' candy rolls to my sweat pants. I had to wear a sign so people would know what I was supposed to be. I guess I'll have to do that again with whatever idiom I decide to use.
I'd like something that isn't too plain, so that it actually looks like a costume. (I considered 'Wearing my heart on my sleeve,' but I consider that one to be too plain.)
On the other hand, I don't want it to be too gross. (We thought of 'The cat's got your tongue' or 'tongue-tied' or even 'I'm all ears' but the thought of waving around a body part or wearing body parts doesn't appeal to me.)
So I want it to be

'not too gaudy',

not too gross,

not too difficult to put together,

not too plain, and not too this or not too that.

Uh oh...

I guess I'm asking for a bit too much, huh?
Well, maybe there's someone out there in P.T. Land that understands what I'm trying to say

... Any idiom suggestions that might fit the bill?