Reddit mentions of Polycell PRPS25L 2.5L Plaster Repair Polyfilla Ready Mixed by Polycell

A few cheap items i always point people towards when it comes to building 40k terrain, especially orky stuff;

1. Aquarium Gravel filters, these are modular plastic trays which are used in the bottom of fishtanks to allow water to filter through but to stop gravel, they work really well for platforms, walls and walkways for 40k and they are super cheap, you can get like 10 of them for £5.https://www.amazon.co.uk/gp/product/B01MFFRBA3/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1
   
2. Plaster Repair Filler, you can get a 2.5l tub (2.5l will last for years) for around £10 and it is really useful for spreading on terrain pieces you've built to blend pieces, fill gaps or add texture, some people even use it to base their miniatures since it is similar to Citadel texture paints, takes a while to dry though (overnight); https://www.amazon.co.uk/gp/product/B001GUA9RM/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
   
3. DIY kids straws, they are plastic tubes which you can scuff up a bit with sandpaper, prime and paint to look like industrial tubes and pipes https://www.amazon.co.uk/gp/product/B073ZWZR9K/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1
   
4. Eva Foam Mats - probably one of the most common bits used by terrain builders, they can be cut up easily (with some good scissors) and with a hot glue gun or superglue can be made into all sorts of items, you can make walls, rubble, stones etc. etc. or even build entire buildings out of them, they are also really really cheap https://www.ebay.co.uk/itm/20Pcs-Eva-Foam-Mat-Soft-Floor-Tiles-Interlocking-Play-Kids-Baby-Mats-Gym-31X31cm/153498380743?ssPageName=STRK%3AMEBIDX%3AIT&var=453478461462&_trksid=p2057872.m2749.l2649
   
5. TTcombat's MDF terrain: TTcombat has the best value MDF terrain in my opinion, if you are going for a shanty town look, you will probably want old shipping containers, scaffolding etc. (their containers and scaffolding kits are both under £6