I've got a couple older laptops I like to use to test OS installs and software without breaking my current rig.
Latitudes E6410 and 6430u
I also still use my original Logitech Rumble Pad 2 for some games and retros.
I think my oldest tech is probably my Alpine MRV-T502 amplifier in my car...
Since I don't do everything on my phone 6" is usually my max. My latest phone is 6.4, but that's the smallest Moto I could find and still have decent specs.
I'd look at picking this up if I didn't have the Power from 2020. They really downgraded the '21 and '22, but this looks nice. Unfortunately by the time they drop the bottom out of the price they won't be pushing updates for it anymore.
Or, I pick up one of these and keep the '20 as a spare.
I've seen a few OptiPlex videos and they also removed the drive cage to make room for longer cards. I have a 3020 MT case that I threw a 990 in, removed the optical drives and installed a monitor for stats.
If you're still using the same Google account you can find the game. Open the Play Store then click on your account. Go to manage apps and device and under manage you'll see all your installed apps. If you change the pulldown from installed to not installed you should find apps on your account...
I'm running a JBOD Storage Space with and IcyDock ICYcube 4 drive enclosure in the mirrored configuration. I can move the enclosure to a different computer and my Storage Space is available as long as it's running an equal or newer version of Windows. If I plug it into a PC running an older...
I tested on my phone and a USB meter, it charges at .95A or 950mA on my laptop but the same port USB 3 port charges my old tablet at .42A or 420mA. It seems you're still limited to the USB 2 power spec by the devices themselves even if you're using USB 3 ports.
I've read 3-5 years is average battery life on consumer grade backups. I don't have much experience outside of APC and CyberPower but lots of people praise Eaton for their backup solutions.
I cut out the 5" bays in my old OptiPlex and put a 7" screen in there. It's powered and gets signal by internal USB headers. I'm using Rainmeter and Speedfan for the info which looks much different now.