The most authentic piece of Celtic jewelry is an item actually worn by hundreds of thousands of Iron Age Celts––the torque. The torque is a decorated metal band which is worn around the neck but does not connect at the ends, unlike a necklace. Look it up on Wikipedia to find out its history and significance and on image sites to see what they look like. They often feature animal heads at the two ends, usually animals which live in Western Europe and had a special significance in Celtic culture. Recommended animals include wolves and boars, which both featured heavily in Celtic myths and legends, the latter of which was sacred in the Celtic culture of Gaul.
There are also many tee-shirts, sweaters, scarves, hats and whatever else which features names and designs of all the Celtic nations. For example, there are many tee-shirts and sweaters which say “Ireland” and have Celtic knot designs and/or crosses, as well as Scottish shirts featuring the cross of St. Andrew or the Lion Rampant.
Gaelic football is mainly present in the Republic of Ireland, and is an example of a very uniquely Celtic sport. The most important event in rugby is the Six Nations Rugby competition, which features six nations competing (England, France, Italy, Ireland, Scotland and Wales), the last three of which are Celtic nations. Sportswear is not only important to modern Celtic culture but it often features much older symbolism, for example Scottish football jerseys will usually feature the cross of Saint Andrew and Welsh rugby shirts feature the Welsh Dragon, a symbol which dates back thousands of years and is a symbol of Celtic strength, pride and resistance.
Creating a Pandora account and making a Celtic radio station is a good way to discover a lot of different Celtic bands, from all over the Celtic Nations as well as the United States and the Canadian maritime region such as Cape Breton, Nova Scotia.
Many of the ancient Celts of Britannia were known for dyeing their skin blue with an early natural dye known as woad, which contained small amounts of indigo, and thus blue is a recommended color for these symbols, followed by red and green. Women, wear little or no makeup unless you are trying to mix the Celtic look with a more goth look, as Celtic women tended not to use cosmetics like their southern neighbors did. If you want to dye your hair, natural-looking red (ginger) hair color is a good idea, as it occurs more frequently among Celtic peoples than any other peoples on Earth, and is particularly well-known to be a common Irish and Scottish trait.