I need to make a fairly accurate construction of a monkey and i dont want to use plasticine or play-dohWhat are some different options and materials?
Spray foam actually provides the best insulation per inchIt is expensive though and it will push apart your walls if you don't have one side removedFor a preexisting wall the best bet is loose insulationthat requires a couple of holes in every stud bay.
The foam will help a lotThey have some soy based ecologically friendly insulations now that are greatFor your attic I'd spray in cellulose.
Scrunch up aluminium foil into various shapes and assemble to form a basic monkey shape - that will be the the core Next apply paper mache to form the actual surface that will make up your monkey