Diffusion box, you can use the 6x6 for any of the smaller formats. For the neg mask/carrier, you can make a temporary on from some mount board - I have the L1200 and the 35mm mask was originally a bit of black mount board before I scored a set of proper femomasks. For the Bimaneg carrier, I think "Bimamask" would be the name Durst used for the masks..