I did something earlier that I am going to try again. I went to a temporary Halloween store and found this set of spooky, Halloweeny stencils to make small signs. They had a set of "drippy" letters to add a name to the Cat, Jack, etc. They were a buck. I bought ten.
So my artistic, done before, idea was to do a bleached T-shirt thingy. I took one of my blue ones, since blue dye is most sensitive to bleach damage and laid out the letters:
ENTERING THE GNARL
... taped it all together and used it to stencil a thinned down spritz of chlorine bleach onto the shirt until it seemed to work. Then into the vinegar.
It looks cool and it seemed to work.
The message may not make sense to some, but we entering should warn others.