What's the best designed physical product you own?

my favorites are those that I use frequently

Darn Tough socks $24
KAI 7320 scissors $60
Hario V60 olive wood dripper and carafe $70
Mininch Spinner screwdriver $70
Leaf razor $84
Männkitchen Pepper Cannon $160
Miele Classic Plus dishwasher $1400
Cannondale Synapse Neo ebike $4200
Klipsch Forte IV $4900

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Leaf works with standard safety razor blades so you can buy them from many different brands. There are cheaper ones and more expensive ones. It's better in every way than buying proprietary cartridges.

Leaf Razor looks great! The blades are incredibly cheap ($0.24 each). Are they comparable in durability compared to Wilkinson or Gillete?

Darn Tough socks are my favorite purchase of last year.  Cleared out my whole sock drawer!