Ask HN: How do you choose which project ideas to pursue?

I'm sure most of us had to at some point choose between several personal projects to take on. Maybe a new technology to learn, a build in the physical world, or some code/product/service for other people to use. When you have more ideas than time, how do you choose which one to pursue?

What makes you more curious about one technology over another?

Which considerations go into crafting something by yourself?

How do you evaluate how useful something you could create would be to others?