Telegraph poles are one of those items that really seem to make a wargames table look like a 20th century battlefield, so I really had to get some. I considered making them from wooden dowelling, etc but then I saw these from 4Ground.
They're advertised as ready painted but I decided that they needed to look more "concrete-y" so I painted the main 'post' black then layered on the Foundry 'Slate Grey' triad. They also make good places to put signs advertising shows - as this keen eyed subaltern has noted.
Here's a closer shot of the different styles of 'tops'. The kit includes enough parts to make 7 posts with up to 2 of them being like the post on the left.
Oh - and one more thing - pay close attention to the construction diagrams when building them! They're fairly easy to build, as long as you read the notes first.