I give this during the first week to my students to assess where they're at.
It also is a mini lesson/review on how to write a PERFECT PARAGRAPH using "APE" - a lot of them learn this in elementary school so it's a great, simple, formula to teach them. It really works.
There's loads of topic choices online that you can find. My go-to are from the Literacy Test (should students have a part time job? / should students be required to wear a school uniform? ETC - basically any topic that'll make them react)
There's also a really simple, important "how do I think I did" self-evaluation at the bottom where you can see how confident students are in their OWN writing abilities.
NOTE - I always keep these in a binder as a part of formative assessment. It's helpful!