Read your competitor’s posts.
Review a book you’ve read recently.
Watch videos on youtube for inspiration.
Find a blogging nemesis.
Be a filter. Make a reading list of good articles you’ve found.
Spend 5 minutes searching Google for terms relevant to your industry/topic.
Read your favorite news site. See if anything pops out at you.
Find someone to do a guest post.
Write something very short.
Or just don’t.