Every forum needs a room with the comfy chairs, and this is ours — off-topic chat, the tangents, and the stuff that doesn't belong anywhere else. It's also home to the fun puzzle side of this hobby: lost media and mystery formats. If you've got a tape, disc or bit of gear you can't identify — an odd cassette shell, a label in a language you don't read, a format you've never laid eyes on — post a photo and someone here usually knows.

To get us going: what's the strangest or most unexpected thing you've come across in your own collection? A surprise recording on a tape you thought was blank, a format that stumped you, a piece of kit nobody can put a name to? Photos very welcome.

No question's too basic, and no tangent too daft — that's rather the point of this corner. Pull up a chair.