As you build your website, you might start to run out of ideas! That doesn't mean you should give up though, especially if this is a niche that you like. There are thousands of topics to write about in every single niche out there. You just have to make the effort to go find them, and sometimes get a bit creative!
Here's how I look for post ideas, and I usually end up with way more ideas than I need. I find that a single brainstorm session rather than thinking of a post each day helps me to be more productive.