Free: Contests & Raffles.
I think fur put up would be good. maybe tough to do in an article but if it could be done I think it would be of interest to everyone. Lots of possibilities too. JODakota posted a very nice piece on washing coyotes. Something like that would be great. Also you could do more then one article per animal. Let's say beaver could have articles on clean skinning, rough skinning, several different methods of fleshing, boarding, hoops. Lots of possibilities.
Pre-season gear prepMaking sure traps work flawless , painted, trap tags etc...All gear and tools BaitScent Vehicle tuned up , tires ,brakesEtc... etc...
Reviews on gear like traps, fleshing knives, headlamps, lures. Could take two products and do a pro/con head to head.