You don't need to overthink this, but a little effort goes a long way. Here are a few ideas:

• Include a note with basic usage instructions: how to inhale, how to know when it's empty, and how to dispose of it properly.
• Pair it with a nice carrying case or a small pouch. It protects the device and feels more intentional.
• If you're giving it as part of a bundle, add a vape-specific accessory like a lanyard or a portable ashtray—just make sure it's compatible with the device size.