I have been looking for a cheaper, no-data SIM card to use with 2FA Mules - this is very helpful.
I got one for my kid as a camera. Why? Because it costs as much as many kids cameras, while they're absolute trash, and the camera module/software in the iPod takes really high quality photos that are easy to export or manipulate.
Old iPhones are inexpensive, but you cannot disable emergency calling for a good reason, but that good reason still doesn't make you want to hand one to a 7-year-old as a glorified camera.
You literally can't "just buy one" that's new to give to a kid.
Chiefly, it weighs 88g vs the 138g for the iPhone - a considerable difference for a child.
Some apps are a little cramped on what is now considered a small screen though (e.g. TikTok UI takes up most of the screen).