Juul vs Vuse: A Comparative Look at Leading Vaping Brands This Might Just Be the First Great E Cig WIRED E cigarettes and vape devices come in a number of forms. While some resemble tobacco products, others resemble household objects like USB devices, pens, highlighters and chargers. Some devices are re chargeable and other JUUL copycats are flooding the e cigarette market The Dangers of Juuling National Center for Health Research The Juul vaporizer can be disguised as a Sharpie or a USB stick, and contains nicotine, glycerol and other chemicals.