Yes, you can still use it as a mobile hotspot with service, and that can be useful.
Maximize Your Connectivity with the Best Portable 5G Routers for Open-Source Flexibility
Make a DIY thermoelectric generator to convert heat into electricity. Perfect for off-grid power projects and eco-friendly energy solutions.
Maybe you could build a BioLite clone rocket stove?
How does the light work, is it just a weak lantern?
12v socket and more USB ports might be more practical, but it doesn't recharge the battery on the go from USB:
https://www.homedepot.com/p/RYOBI-ONE-18-Volt-120-Watt-Push-Start-Power-Source-with-12-Volt-Outlet-Tool-Only-RYi12VBG/323299281
Rclone syncs your files to cloud storage: Google Drive, S3, Swift, Dropbox, Google Cloud Storage, Azure, Box and many more.
Alternative for Windows with GUI: FreeFileSync
Free GNU+Linux base OS. Devuan is a fork of Debian without systemd. Devuan Bewoulf provides a safe upgrade path from Debian, to ensure the right to Init Freedom and avoid entanglement.
Infrared grilling is exciting and relatively new. The Solaire Everywhere is our first tested infrared grill. It does some things really, really well. It...
It can do WebDAV, and run in a browser.
Cheap, and can do offline GPS. Should be rootable, too. Main alternative, to me, would be a Samsung, for being Korean-made.