What non-vaporizer accessories exist for 510 batteries?

[FlyingLow]

Recent travels have made me realize the value of discretion when traveling with pen batteries.

So not to cause red flags at metal detectors or other inspections, I was ruminating over accessories that would not draw any attention to the battery.

If you know of any others, please respond below:

• The first option I came across were these flashlight tips for 510 batteries:
  
• A vibrator would make any curious inspector move on without further handling. Enter the Stashe VYBR:
  

What other non-vape 510 options exist? What else is out there?

 

[chillAtGVC]

For me, the vibrator wins hands down, no contest. Bonus points if you leave it a bit lubed up in your luggage.