old discarded ones fine
but man dont take one says.....
one way
.stop
rialroad
yield
curve
ROAD CLOSED
DEAD END
or anything like that,
off no poles
people get killed like that,may seem harmless
but the state does not run out and put them back up
till usaully after somebody misses that sharp ass curve
hits a one lane brigde or some railroad tracks,
loses it,

anyway,enjoy something that dont do damage to others
and life be better for you and the rest of us,
peace