Guns.
Jack Handy once noted that the earliest fly-swatters were probably just some sort of flat striking surface attached to some sort of long thin handle.
Back to the OP…
Stamps.
Many religious rituals.
Basic plot lines and story elements.
Skeletal structure.
Basic agricultural practices.
And oldest of all…
Mac .v. PC arguments
Trek .v. Star Wars arguments
As long as you can’t hear what they’re saying.
Human nature
Ponytails.
Shoelaces.
Sex.
Calendars.
Mirrors.
Straws.
Paper clips.
Canned vegetables.
Bottle caps.
Easels.
Kisses
As late as the 1920s CocaCola contained cocaine. My grandfather drove a Coke truck. He was a happy man.
verification: http://www.snopes.com/cokelore/cocaine.asp
The Balkans are a bad place to fight a war. Wouldn’t Alexander the Great have said the same thing?
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the price is right
I lived in Mississippi for one very long year.
There are parts where, driving through, I would have had no idea what year it was if I was left to verify the dates based simply on what I could see around me (not counting my car, of course).
Can you please at least say you’re a toasterologist?
Just for me.
Hey, if that’s your bag, baby…
Hi, my name is racinchikki, and I’m a toasterologist. 
Happy now, eh?
Dick Clark
Keith Richards. Still butt ugly!
I have often marvelled at how cars are basically the same shape as they always have been.
In the sense that:
Four wheels, one in each corner.
Driver at the front and to the side, with a passenger seat beside.
Engine at the front, storage at the back.
Pedals. Windscreen. Mirrors. Horn. Handbrake.
In essence, despite incredible change and improvements in efficiency and aerodynamics, the basic format is unchanged over 100 or more years.
little kids still prefer to play in the big box their toys came in rather than to play with the expensive toys. Priceless. Damn straight. I just bought a big box at Xmas and skipped the toy 
I love Mississippi. Some stuff has changed. And that is good. Some things have not changed much at all. And that is both good and bad. I would love to live there again. I plan to retire there… if I ever get to retire.
The Radio Flyer wagon.
The A2 Flight Jacket
Lycoming and Continental aircraft engines
The Zippo lighter