Few months ago I decided to create my first gaming table dedicated to post-apo skirmish wargames. Browsing this forum I've seen a lot of great tables and scenery ideas. Unfortunatelly a lot o great items like Plasticville sets or even MDF TT Combat buildings are out of my price range. My main goal was to create scenery as cheap as possible. I think I found some quite nice options which are available for literally few USD/Euro.
First site I checked was aliexpress, chinesee website that offers free worldwide shipping for most small items. Shipping takes about 3-4 weeks but as I said it's free.
1. Set of plastic road signs for $1.22 found HERE:
https://goo.gl/NB4uW1Imho fits ok for 28 mm, some examples:

2. Cheapest watchtower I've ever seen. Great set for this kind of money ($2.29) HERE:
https://goo.gl/3OKlH8. It comes unassembled so you can also use parts for scratchbuilding other scenery. My painting sucks but I think this tower can be used not only as a watchtower but also as a base to create a windmill or water tower.

3. Tires - again the cheapest option I found. Set of 10 rubber tires on plastic wheels for $1.35 bought HERE:
https://goo.gl/BPzJ7s They can be easily removed from the wheels and used as a nice addition.

4. Construction vehicles - for $0.85 you will receive random plastic construction vehicle HERE:
https://goo.gl/yioRgo After wheels swap and some weathering it can look like:

5. DIY fence - made of plastic miniatures sprues, fibreglass tape (about $1 for 10 meters), PVC glue and cardboard. Nothing special but quick and easy to build.

6. Wodden (plastic) pallets - credits for this find goes to
Vanvlak from this forum. Here is a
link for his thread. Pallets are made by Siku and are available in a bags of 50 psc. You can buy them on
Amazon.co.uk for less than 11 GBP or check you local vendors. I bought this set for about $8 with free domestic shipping.

UPDATE: Member of TNT FB group sent me a link to another thread in this forum with even cheaper way to make some decent wodden pallets -
HERE.
Feel free to add your ideas for cheap PA scenery.