These strings are called zizith (Numbers, end of ch. 15). Take a four-cornered garment, and make a hole in each corner (about 1 1/3 inches from the corner, measured diagonally). Take four strings which are each at least two-ply (eight-ply is customary). Three should be about 3 feet long, and the fourth should be about 5 feet long. Insert the four strings into one of the four holes and bring them to the mid-point of their length (except the long string, which should have all of its extra length on one side). Fold them so they appear to be eight. Tie all the strings in a square knot. Wrap the long string seven times around the others and tie all the strings in a square knot. Wrap it eight times and tie a square knot. Wrap it eleven times and tie a square knot. Wrap it thirteen times and tie a square knot.
Take more sets of such strings and repeat for the other three corners. Voila.
People wear a red string on their wrists for the religion Kabbalah.
Anyone who wants to can tie a red string around their wrist, without any fear of offending most Jews. The most you'll do by wearing such a string is make them wonder if you are into new-age sillyness such as pop-Kaballah.
A Jewish batch.
They were made to wear stars of David.
Kippa
Yes, evidence suggests that people in the Stone Age did wear jewelry. They often used materials such as shells, bones, and teeth to create ornaments like necklaces, bracelets, and earrings. These adornments served not only as decorative objects but also as symbols of social status, cultural significance, and personal identity.
perhaps civil war soldiers of Jewish descent.
The two tablets of the Ten Commandments, made of white linen or parchment.
Men wear suits and ties, and women wear dresses or slacks.
Why would you want to? No law against it, but people would mistake you for Jewish.
No
To remind us that God is present.