Can you recognize these 11 objects?

2. A mini door in the main door

This strange opening is intriguing: what could this little hatch be for?  It’s actually a communication window , allowing you to talk to someone without fully opening the door. It’s useful for security reasons or simply for politely refusing yet another advertisement!

3. Numbered clothespins?

Strange, isn’t it? Each clothespin has a different number.  This makes it easier for manufacturers to identify which mold is producing defective parts first.  It’s a bit like a serial number, but for everyday objects.

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