That "Symbol on hard filing notebook - unknown logo or symbol"?
I think it's a hole, rather than a symbol.
Wifeanon has a laptop holder that has a similar hole.
I know there weren't laptops back then but the laptop holder maker, might have designed it after the thing sitting on the desk in the picture?
Oh, on further inspection I see there's a flat-screen to the left of it called out – so, maybe it IS exactly her laptop stand? Wild stuff.