People buy the weirdest things on Amazon… Here’s a biometric door lock, most often bought with a knife and a Harry Potter Blu-ray box set. Click for full image:
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Found on BIOLOCK 333 SN-BK Biometric Fingerprint Entry Lever Door Lock with Remote Control, Satin Nickel with Black Accent People buy the strangest things together on amazon

Just for fun, I made a few more (mostly) funny combos from real products available on Amazon:
amazon robber People buy the strangest things together on amazon
amazon dirty People buy the strangest things together on amazon
odd sick People buy the strangest things together on amazon
odd dog People buy the strangest things together on amazon