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 vape: What is it, why are teens addicted, and is it safe? CNET The Ins and Outs of the Newest eCig: The JUUL by Margo Gordon Medium Vapes That Look Like Juuls Juul, the vape device teens are getting hooked on, explained The Dangers of Juuling National Center for Health Research