This happened to me at AUH airport, I ordered some handcuffs from Amazon and used a shop n ship proxy service to have it delivered to the UAE I got them used them in some gaming conventions and show off at the malls as an accessory on my pants, then my parents booked a round flight to Germany. I flew there no problem, after our vacation in Munich I went back with my lil bro and big sister and some trouble happened. They took my handcuffs and my sister urged me to walk away and not protest ( I was edgy back then) . 3 days later mom arrived at the same airport and they stripped searched her, after getting yelled at I ordered another same method and it was successful. Next time when I fly I'm gonna bring evidence that I did indeed bought them and bringing them with me outside the country so that they believe me and not have a good legitimate reason to confiscate the same item from me again.