BobK207 wrote:
....

imo the fastest, cheapest, easiest & longest lasting would be "stucco
line wire" (similar to DPB's suggestion)

I'd start a few inches down from the top & nail in a row of dry wall
nails across the wall studs......repeat the process about even foot or
so....ending with row, again, a few inches from the bottom.

After all the nails are in starting from the upper left (if your right
handed) wrap the wire around the first nail. Continue across the
studs, givining the wire a wrap or two at each nail.

....

That works and similar to my thoughts, certainly. Since it's a vertical
wall (I think?), my thought would be to start at upperleft (say) and go
diagonally across to opposite corner or at 45 or less angle depending on
the wall length -- that gives a longer area across each wall cavity the
wire runs.

I'd also probably use only the two end nails initially (although they
would have to be heavier to hold the load) then stretch it not very
tight (just enough so it doesn't sag much) and then use a stapler w/
decent-sized staple to fasten down the middle. That saves the wrapping
around the nails in the intermediate runs which saves both time and
(some) wire...

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