I got a few cardboard box's several years ago, some gaffer / duct tape, a large cooling 12 volt fan from an old computer, some old vacuum cleaner flexi hose, some sketch paper and pencil and ruler and knife and maybe a hot melt glue gun, what a tool that is for sticking cardboard !!!. I made an extractor hood vented to outside with no filter material at all and it worked a treat , just don't make the hood too large area as the fan draw wont be very effective , you could make drop down sides and back to improve the effect , its all experimentation.
Design it on paper before cutting the valuable cardboard.
Pro extractor systems are not cheap so it its make do on the cheap.
Good luck