Yeah Rosco colours are good IIRC from when Sammi made some hangings. The Level 3 acrylics are OK but don’t cover very well especially on dark background and are not so intense, but you can use them for colouring with highlights in Rosco to keep the cost down. Level 3 also has a tendency to turn muddy if you over-mix them (also to turn to leather if you put too many coats on !)

She just got loads of plain black or white material offcuts from market stalls and friends/relatives which made some great drapes when painted up.

Fireproofing stuff I think was pretty cheap, we bought a 5 litre thingy from the same place we got Rosco colours from (some stagecraft place, forget the name now), cos there were so many to proof, and we still have more than half of it left !