This 'box mod' was originally made as a joke, people took it seriously so here it is:

Features an ergonomic grip, holes everywhere but still looks cool, handy dandy pre-drilled holes for screwing things down, has a flat bottom so it actually stands, battery tray slot so it doesn't slide everywhere, per-drilled magnet holes made to fit perfectly, belt loop clip stupid easy to install, more holes for battery venting, a wire cover that actually looks mildly OK, plus accompanying wire cover stilts so you don't have to glue everything in, or glue it all because who cares, ALL the shoddy soldering and wire work will be covered!!

*510 hole fits most 22mm fat daddy 510's

*Button hole fits 16mm sized buttons.

*Battery tray slot fits most dual 18650 battery trays, if however you find yours to be to tall the shorty battery tray in my other designs works perfect.

*Installation of the belt-clip attachment as well as wire cover requires easily found #4 Wood Screws.

*The magnets are from www.fatdaddysvapes.com - Zinc plated 3mmX3mm case magnets in N35 grade so it does not get pulled off paired with 6mmX2mm N48's. Or hell just google those magnet sizes, probably much cheaper elsewhere.

*This project was designed to save time and plastic but keep its structural integrity, hence the holes everywhere. They also serve as a nice surface for gripping!

*The various lids are just cosmetic, the idea was to have a walking billboard for a mod that screams different.

Things needed to put this together complete checklist:
3 - #4 Wood Screws for the wire cover & belt clip
4 - 3mmX3mm magnets for the case
4 - 6mmX2mm magnets for the battery cover
1 - 510 Connection
1 - 16mm Button
For the electronics:
1 - Reel of 14ga-18ga insulated copper Wire
1 - Mosfet IRLB3034
1 - 100kohm+ Resistor for Mosfet
1 - Dual Battery Tray
1 - Soldering Iron
1 - Reel of Solder
1 - Container of Rosin Solder Flux
Optional:
1 - Voltage Meter
1 - Print Voltage Reader Cover in my designs if using Wire Cover 3
1 - LED Light
1 - Resistors for LED

Disclaimer: Do NOT attempt to build this if you are unfamiliar on how to build a box mod or haven't done DIY kits yourself before successfully. I am not responsible for any damages that may occur as this is just a chunk of plastic that looks pretty (kinda).