I enjoyed seeing Reddit user Manoucher’s process in creating a waxed cotton Swedish Army anorak for himself. It cost him, in total, about $35. Of course, this style of anorak is much more freely available in Swedish military surplus shops than our own, though a search on Google or eBay for “Swedish Parka” or “Swedish Anorak” reveals a few affordable options.
The basics: bought the Parka for about $15. Altered the sides to make it a little trimmer (it’s designed as snow camoflage overwear). Dyed it using $5 worth of dye. Then proofed it with a $12 bar of wax and a hair drier. The result looks pretty darn good.