I picked up a bag of model railway lamp-posts on Ebay from a buyer called 'we_honest'. It turned out, he was. Anyway, I got a box of fifty posts for £13 including postage, which I thought was pretty good, and they turned up last week.
How to base them? Well, I have a few plastic 30mm bases which I have tried to texture myself. I'm not 100% happy with them, and I think I'm going to actually buy the bases for my Empire of the Dead figures as they arrive, but they're good enough for scenery.
I don't have any VSF painted yet, but this pirate gives you an idea of the height - they are 60mm, though you can get 70mm if you feel it's a bit short - personally I'm quite happy with them.