Thursdays' Tech Tip
Write about is a classroom writing community and publishing platform built by teachers It offers so many prompts & ideas. It's not solely geared toward ELA teachers ... there are many prompts for other contents.
Though there is a premium subscription, the free versions is just as good since prompts are part of the FREE aspect? Yep! And it integrates with Google Classroom! Check it out ... I know you'll love it!