PCB Boards & Chipsets: The brains of the device. Ranging from simple boards in disposables that manage basic firing and charging to advanced, programmable chipsets in mods that control every parameter (wattage, temperature, curves) and provide extensive safety protections (short-circuit, overheat, reverse polarity).

Firing Buttons: Tactile mechanical or membrane-based switches that complete the circuit to fire the device. They are engineered for a specific feel (clicky or soft), durability (often rated for tens of thousands of presses), and aesthetic integration into the device's design, coming in various sizes, colors, and materials.

Mechanical Mod Clones: Unregulated devices with no electronic circuitry or safety features. They deliver raw battery voltage directly to the atomizer. Marketed to advanced enthusiasts who understand Ohm's Law and battery safety, these are often more affordable reproductions of high-end "authentic" mechanical mods.

E-Liquid Bottles: Often called "unicorn bottles," these are long, slender LDPE plastic bottles with a needle-nose tip for easy, precise refilling of tanks and pods. They are a fundamental accessory for anyone who buys e-liquid in large bottles or decants their own mixes.

Adjustable Wattage Pod Kits: Provide users with the ability to adjust the power output (wattage) of the device. This allows for customization of vapor warmth, density, and flavor intensity. It bridges the gap between simple pod systems and advanced mods, appealing to users who want more control without the complexity of a full box mod.