I love messing around with technology that's not old enough to be considered vintage, not new enough to be considered usable, just this odd in the middle obsolete stuff.
So you bet your ass I'm spending my weekend on the three old iPads I got from my work and finding ways to utilize them.
Well I've already got my existing 64GB iPad 2 which is downgraded to iOS 6 and it's essentially a giant old game console, full of old iOS games and emulators.
The iPad 3 I got today works well as a second display (via TwomonUSB) so it will take that role from my iPad 2. Having a touchscreen portable monitor is just severely underrated. It'll mostly be at work with Teams on it, and occasionally with my study laptop as a portable second display.
The other two iPads are both Air 1st gens. One of them will be used just as a device for me to watch YouTube and browse Lemmy on in bed while my main phone charges.
The other one I'm yet to do anything with but I do like the ideas others have commented. Might be used as a self hosting dashboard showing uptime, usage stats, internet reliability, something like that. May also prompt me to actually set up a self hosted NVR