There are plenty of Amazon keyword tools that can help you identify good niches to sell products on Amazon.
But finding niche keywords is a reverse engineering process. The search volume on Amazon already exists, so it’s up to us Amazon sellers to find out which keyword searches are getting lots of searches, aren’t too competitive, and have room for a brand to enter with higher quality product listings.
We can use the help of Amazon Keyword Research tools to help us track these elusive niche keywords down.
Our friends at AMZ Scout wrote an article about Trending Products on Amazon which I recommend checking out here.