A ColecoVision cartridge pulled from the ashes of my house fire. I free the board, clean off the embedded soot, print a new shell and label, and see if Carnival still boots.
An Atari 800 with a missing key gets expanded to 48K, RAM tested with a Super Salt diagnostic cartridge and a 3D printed temporary keycap. Then the original key turns up in the box.
I fit a DA Retro switchless region free mod to a PAL Mega Drive, with a tri-colour LED and no toggle switches, then see how much 60Hz really changes.
A box from a loft, opened in Stroud with Neil from RMC: an Amstrad PCW 512K, a full box of 3-inch discs and some very unexpected tapes.
A rusty trunk that sat in my workshop for months turned out to hold a boxed Spectrum+, a Timex Sinclair 2040 printer and a pile of books and tapes.