Stars of Mary

Photo is courtesy of Wikipedia; entry: Hamburg.
I bring these hexagrams in the coat Of arms of Hamburg as an example for the prevalent usase of hexagrams in European heraldry.

English star

David W. Lange, an expert on American Numismatic wrote an article titled Seeing Stars were he sheds light about the usage of six-pointed stars on American coins:

In American numismatics the mullet is sometimes referred to as an American star, while the six-pointed version is described as an English star, but I've not been able to find any definitive source for such usage.
The so-called English star predominates on 18th and 19th Century United States coins, but it gave way to the American star for most 20th Century issues. Charles Barber's quarter dollar and half dollar of 1892 appear to have been transitional, as they feature six-pointed stars on the obverse and five-pointed ones on the reverse…

Jerusalem Day

Photo of Star of David on a poster for Jerusalem Day is courtesy of illustrator and artist Sabina Saad. The poster was made in 1994 for the Israeli Information Ministry and for the Education Ministry.
Sabina works in her studio at Ramot Meir, Israel, and you can call her on the phone 97289410231
Copyrights: Sabina Saad 2007

Menorah on a Star of David

Photo of Menorah on a Star of David in Mt. Herzl is courtesy of "KRS Juan" who published it on Flickr. 

Crimean Tatars

In Bakhchisaray Small Khan Mosque  above  the  mihrab there's a stained-glass window decorated with a Solomon's Seal sign.  The Crimean Tatars used this symbol also on their gravestones, coins and jewelery.

Mogen David Wine

The concept of the Mogen David is so powerful that it can help selling products even without the shape of the six-pointed star. 
Photo is courtesy of "MK" who published it on Flickr and wrote to me:

I don't think this is about The Star and there is no interesting story behind it. The wine I took a picture of was just a cheap wine, and so sweet!

The Sky of the Mihrab

Picture of Solomon’s seals in Hagia Sophia Istanbul Mihrab is courtesy of "semiotheque" who published it on Flickr.