Accessories for Yak-1B now available from Brengun's e-shop:
Photoetch set:
http://www.brengun.cz/e-shop/1-72-accessories-21/yak-1b-(brengun-kit)-1663Vacuformed canopies, one open, one closed:
http://www.brengun.cz/e-shop/1-72-accessories-21/yak-1b-vacu-canopy-(brengun-kit)-1670Painting masks for canopy:
http://www.brengun.cz/e-shop/1-72-accessories-21/yak-1b-vacu-canopy-masks-(brengun-kit)-1668Prices are European, VAT included; click on the box in the top right corner for a dropdown with other options.
These are a good start; I'm hopeful that the two excellent Yak-1B kits now available from Brengun and Arma will encourage some aftermarket producers to give us something - Peewit has already released canopy masks. On the other hand, these kits are so good that they really don't need much to improve them. Word has it that Exito is working on one or more decal sets. Based on their existing products, these may appear as several sets, each with three individual aircraft per sheet.
A set of resin exhausts with hollow tips, particularly for the Arma kit, is something I'd buy several of - I'm no good at drilling out anything so tiny!
John