What word to use for generic custom reporter slot

I've gone round and round on this
What is a "good" word to use for a variable (when it could be any type) in a custom block

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I don't like thing
I don't want to use value as that is the default in a HOF so I to keep it for them
I don't want to use data as a lot of list reporters use data for list only values and I'm now locked into "data" == a list

Anyone got other ideas?

var
set
def
v
uv
get

I think sometimes you should use some symbols near what you need the name to be.
i.e

"_ value"
"_thing"
"_data"

Now that I think about it, I should also do that.

Tbh, when the input really can be any value at all, I just use "x" :~)

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