Did you ever harbor a secret wish to anchor the TV news?
You might not be on a major news network, but you could become the newscaster for your apartment building, senior center, or neighborhood.
You can do that just using your smartphone video and you can add fancier equipment, like a good microphone, as you go along.
One thing you should think about early on is where you will post your completed videos. There are many places these days to do that. You could post your videos on your Facebook page or on YouTube, for example.
The best short newscast is about 22 minutes. You can do interviews with local people and tell the stories of their lives. It can help people get to know each other.
Here is the basic format for a short newscast (or these days people call it podcast).
Show intro (who you are, what you're going to talk about): 30-60 seconds
Intro music, if you want to get fancy: 30-60 seconds
Topic 1: 3 minutes
Topic 2: 3 minutes
Interlude (music or break): 30 seconds
Topic 3: 3 minutes
Topic 4: 3 minutes
Closing remarks (thank audience, thank guests, talk about the next show): 2 minutes
Closing music (suggest same as Intro music jingle): 2 minutes
There's no reason why you can't just plan your show and do it with your smartphone. As you get more experienced, you'll definitely want to be able to edit the video. Mac users can use Garage Band to do this (it comes with the Mac). PC users can use Audacity.