So, in playing a campaign with John G, we're exploring the three stages of a Tyranid invasion. One of the things the fluff stresses is how the world is changed as more mycetic spores drop, capillary towers grow and digestive pools are filled.

We don't really have terrain at Dragon's Lair to simulate this so I'm in need of aid in ideas for what the landscape would look like. I've scanned through Armorcast's offerings and found them pretty weak for what I think the 'Nid aesthetic would be. The stuff Forge World used to sell looked awesome but isn't available any longer. I've ordered 4 back issues of White Dwarfs which have 'Nid terrain building tips. I also have about 20 of the small Tyranid terrain pieces, but they're so small they're not much more than decoration for bases or larger terrain pieces. Would love to get my hands on the terrain bit from the Battle of Macragge set if anybody has one or five laying around.

Also I'd greatly appreciate any tips on creating Gigeresqe terrain on the cheap.