Here is a cool pen that lets you write with tea, juice, or wine. You will just have to fill your WINKpen with a fluid that has a staining property. The pen has a modular, easy-to-use design. All components fit together using rubber o-rings. Whether you are interested in calligraphy or other similar forms of art, this pen has you covered.
The WINKpen lets you get creative and write using different fluids. It is easy to load too. You can find out more on Kickstarter.