What you got on the string today

Does anyone have any knowledge of the phrase "What you got on the string today?" Or is that something that was made up by someone?

One of the definitions of string is "a series of things arranged in or as if in a line".

So when someone utters your phrase he or she is asking what is on your plan or agenda for today.

Just a guess.

Could it be a reference to fishing? Back in the 1900's (or then abouts), wasn't string used as a crude fishing line?