Both my in-laws were wartime "boffins" at the Royal Aircraft Establishment (R.A.E) at Farnborough, researching on for example improving the performance of the Spitfire.
My father-in-law told me, that towards the end or just after the war, he was given an RAF commission, a jeep, a driver, a list of German scientists and their last known whereabouts. He was tasked with de-briefing these scientists and reporting back.
Whilst on this mission, he stayed in a villa belonging to Goering. hHe took a hole-punch from an office in this villa. This hole-punch bears the stamped information Soennecken D.R.G.M.* 231.8
Internet research reveals this to be a hole-punch of the correct vintage
Other scientists from the R.A.E. were also sent on similar missions, and some have written of their experiences. My mother-in-law was of an appropriate grade to be sent on a similar mission, but being was not allowed to go. Many others will have similar mementoes. My mother-in-law always accused my father-in-law of looting this hole-punch, but he considered it war booty.
Goering's hole-punch sits on my desk, unused, as a memento of both of them, and as a reminder of wartime lives and adventures