I remember duck hunting near an abandoned beaver dam, and seeing lots of cool looking beaver-chewed sticks. I wondered if people would use them for rustic home or cabin décor. I grabbed a couple of medium sized logs with nice wood grains, and took them home. I found several areas on eBay where people had sold similar items for décor and animal taxidermy backgrounds.
People were also using natural beaver logs with no preparation for crafting candle holders for $2-5 apiece. If you wanted to do some work and either make the candle holders yourself, or power-wash and stain the logs, you could make even more money on each item.
In many areas, local businesses will also pay you to bring them outdoor goods and edible items. Bakeries, delicatessens, restaurants, and specialty shops like organic foods stores may pay good money for things you can easily find and gather such as: Berries, nuts, mushrooms, and edible plants like wild asparagus and wild leeks.
If you own wooded property, timber companies may pay you very good money to come to your property and harvest timber. Most timber companies will even do select cutting, where only specific trees are cut, or a stand of trees is thinned. Such a timber harvest is actually very beneficial to the health of the forest and the animals that live there, and any damage to the ground heals naturally in a short time period. Plus, you can receive substantial money for allowing the timber company to harvest on your property.
Similarly, if you own a large tract of land, you may consider contacting an oil and gas company to test your property for mineral harvest. You may be sitting on a gold mine, and don’t even know it!
On a smaller scale, many other forest products can be sold to local companies for their resale. Such items would include: Christmas trees, saplings for tree sales, seeds and seed-bearing cones to nurseries for tree regeneration, pine and cedar boughs for wreath making, wood mulch, wood chips, and tree bolts to landscaping companies, and the list goes on and on.
I know several people who make hundreds of dollars every year gathering acorns and other seeds and selling them to tree nurseries, with very little preparation time. You only have to do a little leg work ahead of time and establish a relationship with the managers or owners of these nurseries so that you know what they are buying, and when to bring them your supply to get paid.