New people build a station

The agony of the new webmaster: what content website should be built?

I have also registered many domain names, some of which have expired without renewal, and some are still idle. In the past, when looking at the domain name registered by myself, I always felt a little upset and impatient because I couldn't figure out what kind of website to use it as. Today, with the rapid development of the Internet, there are websites with all kinds of content, and more than one or two of them are excellent. How can you stand out by your own participation