Rusted Iron | Mod Review 

When the iron is rust

A bit rusted iron block can be used for horror map, especially stairs. They look like they have blood on them

i love your content, it always gets better

Another ideas could be steel or iron frame block. It would look like scaffolding but dark grey and with x or lattice in middle. Steel beam block. Directional block. Maybe a new structure in flower forest: abandoned greenhouse. Made out from these new iron or steel blocks and glass. It would look like victorian greenhouse or crystal palace