Gas Tank Portable Storage Box is a fun, jerry‑can–inspired 3D printed container designed to turn any spare water bottle cap into a compact everyday carry box for bits, tools and tiny treasures. Product overview Iconic gas‑tank silhouette with bold X‑panel detailing makes this storage box stand out on your desk, keychain or backpack.

 The interior is sized for small hardware, SD cards, earbuds, coins and other EDC essentials, keeping everything in one place instead of rattling around in your bag.

 Smart closure and magnets Designed to accept 4 mm diameter magnets in the corners so the two halves snap together with a satisfying click while still being easy to open one‑handed.

Optional magnet pockets mean you can run it fully mechanical (friction only) or upgrade to magnetic snapping depending on your use case and filament.

 Filament hinge & bottle‑cap top Uses a simple filament hinge: thread a short piece of leftover 1.75 mm filament through the hinge barrels to create a durable, replaceable pivot that prints fast and resists wear.

 The neck is modeled around standard plastic water‑bottle caps, letting you recycle your favorite cap color or brand for a custom look and an easy, leak‑free screw top.