@10centuries Neato!
I suspect my G5 PowerMac wot won't start up and has weird-coloured squiggly lines on the monitor has a dodgy or poorly-seated video card.
While it won't start by itself, it does appear on another Mac as an ext HD when booted into Target Disk mode.
I rebooted the second Mac and chose the G5 as the startup drive. Everything proceeded nicely, just at the speed of a G4 PowerBook with 1.25 GB of RAM rather than of a G5 tower with 13 GB of RAM.
Later today I'll have a play around with the video card.
@matigo Alas, no. When I bought it three years ago, most of its purchase price came from trading in an iPad 3 & an iPad Mini. They still had their original boxes, chargers & cables. The iPad 3 had the SIM removal tool as well.
The Mac retailer/reseller thanked me for going to all that trouble but said it counted for nothing in the value of the used units.
I have found the box the iPad Mini 2 came in. Put the package together, SIM tool, charger & Lightning cable packed away. Updated to iOS 10.3.1, disconnected it from iCloud/iTunes, waiting on unit to recharge.