How do you come up with business ideas?

I'm winding down my service agency in favor of building more products. I shared a little bit about that here.

I have a bunch of ideas already, but I want to be challenged more in this season, so reaching out for new perspectives.

What's your go-to method for coming up with and testing business ideas?

Thanks in advance!

P.S. Let's connect on Twitter: @JamieHoward