Help! Am Stuck

My niche is kitchen knives. I have 15 or so articles on my website covering everything from the history of kitchen knives to how to sharpen them. Am just about ready to start working with social media and need more content.
But I'm out of ideas! I thought about writing something about swords (a long kitchen knife lol) such as the legend of king Arthur that site visitors might be interested in. But after a little research, my idea proved too daunting for a simple blog post.
There is an article that appears on Google page one or two (those darn Google algorithms). It is not a blog. It consists of a few thousands words of text. At the bottom of the page are dozens of links. Since this page ranks so well, I use this site for keyword ideas. A lot of the links point to recipes, at least the links I have looked at. As an amature chef (hense my interest in kitchen knives) I'll probably create a post or two containing recipes. But I don't think this sort of post will hold interest for very long (the page I am referring to has diappeared. This has happened before and the page eventually returns). There are already just short of a zillion sites about recipes.
An idea for a new post hit me on the way to the supermarket this morning, but I obviously can't rely on this for content ideas.
I am writing lots of product reviews, but I don't see much value in posting these to social media (I could be wrong about this - might have to try it and see what happens).
So I'm kind of stuck. I'm hung up on the training because it requires the constant posting of new content.
So where do you guys get ideas for content? Do you look at other websites for inspiration or do ideas just pop into your head? Or do you do something entirely different?
I'd really love to get some feedback on this.
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3 best fishing knives
3 best paring knives
3 best butcher's knives
3 best bread knives
3 best filleting knives
3 best knives for steak
3 best knives for fish
3 best electric knives
Then review each of the 3 and then a post on how to sharpen each (process may be similar and you can plagiarise your own posts) but people do search for individual options.
Then compare electric and traditional knives
Then a series on "how to use a butcher's knife for filleting fish" or "how to use a fishing knife to carve a roast" (which we do when we are camping) for example for those of us who have one knife only.
I hope this helps and the trick I have found is to take a single option and think of every question someone will ask. Don't forget that you are also targeting those of us who cook with one knife only - Oh, another post: If you could only choose one knife - what would it be?
Hope this helps
Paul
Hope that helps
Chris