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 Insight: New 'candy' e cigs catch fire after U.S. regulators stamp out Juul's flavors Reuters Law Enforcement Unit Formed to Crack Down on Illegal E Cigarettes The New York Times Guide to E Cigarettes: Vaping vs. Smoking, How to Choose, Tips