3d printed holder for eight 510 style cartridges or battery pens with four additional spaces for tools. 
Battery/empty cartridge/tools not included.
Makes storing cartridges much easier and keeps them in an upright position to ensure the heating element of the cartridge stays saturated in the cartridge oil. This print has triple wall support and is a very sturdy plastic object.

Item measurements are below:
60mm wide x 25mm tall
 
Each of the 8 holding spaces are 12mm wide so they can accommodate most vape pen batteries of a small or medium size in addition to 510 Cartridges. They also hold the Arizer Extreme Q mouth pieces nicely as shown in the photos. 
Each of the 4 small holding spaces are 6mm wide so they will hold most metal and glass dabbing tools.