If you like to try out bang for the buck 3rd-party gear, the Altura Photo Speedlite Flash Kit, model AP-UNV1, is currently on sale for $34.99 at fulfilled by Amazon. This kit is only $2 more than the flash on its own. This kit includes a softbox flash diffuser, universal remote, four AA batteries, in addition to the accessories that come standard with the flash-only kit. This works with standard hot shoe mounts, it is not brand specific.

This averages 4.4 out of 5 based on nearly 500 customer reviews and has over 130 questions answered, so it is an “unknown known” 🙂 The $34.99 price is important if you are not a Prime member, free shipping is with a $35+ order. Which you can get to by adding (wait for it) the $1.24 AmazonBasics tiny camera case.