Here's a compilation of stuff I found to be uniquely Japanese.
Vending machines. Yes, they are EVERYWHERE. Majority of them sell drinks though.
| Vending machines selling drinks. Some machines sell the same drinks with different prices. Only if you're free enough to compare lah. | 
| Vending machine selling ties, batteries and SD cards. Strange combination. | 
Animation is everywhere, from instructional to informational to just about anything.
| This was up in mountains in Hakone with the black eggs. I have no idea why Hello Kitty is there posing with the black egg. | 
| Other countries would show a stick man. In Japan, it's a boy and a girl on each side of the door with their hands getting caught in the door. | 
| Even Mt Fuji has a soft toy. Guess who fell in love with it and bought it in a blink of an eye... | 
| I have no idea what these two girls were supposed to be. Rabbit ears with tanned faces. | 
| Mascot for the Shinkansen, a platypus with Japanese eyes. | 
| Salesgirl at Akihabara. Most of them were dressed like this. | 
| There were even Ultraman drinks! | 
Then of course, Japan captions are the source of corny lines:
| Advertising for Pachinko. Bring me there now! | 
| Even when I didn't feel like going, I was spurred to go to toilet with this enthusiastic encouragement. | 
And a few other things I noted:
| Japan is very compact. Less space means smaller fittings. Tiny sink. | 
| Where everything is wrapped. Brown and white sugar cubes individually wrapped. | 
| Creative toilet fittings. Here's the all-in-one sink. Water and soap at the top and dryer at the bottom. I can't believe I don't have any pictures of their toilet bowls with their many buttons! | 
| A toilet built only for kids. Low sink, small toilet bowls etc. Adult's use the mirror on top, just to show you how low the sink and hand dryer are located. | 
| Portable toilets. Reminds me of a Japanese prank joke found on YouTube... | 
| All waste is sorted, even at fast food outlets. Plastic and paper. | 
| And they have the squatting toilet, smartly built. Looks like a lying urinal. | 
 
