I'm a former corrections officer and a serving police officer and have found a few novel items recently the first was a disposable lighter that had been hollowed out to conceal a sharpened 6 inch /15cm nail it would have penetrated a light jacket etc
The second was a Stanley blade that hed been glued into a plastic card wallet so when gripped it would push the blade out to allow the user to inflict slash wounds
There have been a variety of others but the best was the the sealed end of a tootpaste tube sharpened to inflict slash wounds
I was wondering what was the most novel concealed blade you guys have found call it professional interest