There are a lot of other things that are symbolic of Gemini, from flowers to Countries.
Birds: Parrots, parakeets, minah birds
Flowers: Lavender, Lily-of-the valley, myrtle, fern
Animals: Monkeys
Nuts: Horse chestnuts
Countries: Wales, Belgium, USA, Egypt
Cities: London, San Francisco, Melbourne
Ruling Planet: Mercury
As you are an air sign & very versatile and adaptable, I should think that you'll be after quite a unique tattoo design that says something about you.
You could even be 'different' and have a monkey tattoo for example and when people ask you why, you can explain that it's because you're a Geminian, certainly a conversation starter. If you don't fancy anything quite so bold, why not just have the Gemini glyph as a tattoo. This is two upright parallel lines with a line across the top & bottom. You could have that on its own or with something entwined around it.The area of the body associated with Gemini is the shoulders & arms, both ideal places for Gemini tattoo designs as shoulder & arm band tattoos are very 'in' at the moment. ( By Katie S Turner )