Discuss which materials to use and where to source them here. Also a place to comment on availability of equipment such as 3D printers, laser cutters etc. Basically, what can you contribute to the cause?
Just to let you know M-SParc have been most excellent and set up a crowdfunding page to raise funds for materials for this:
They have also contributed over £1,000 to the cause themselves already! - Diolch @pryderi