Using two one-inch vending machine capsules (the acorn style) I created a way to carry around your favorite small things.

The design is very simple and can be adapted by adding your own detail to the exterior. I have uploaded a very plain cylinder, and one that is detailed with a honeycombed contour.

In the sample photos, I'm using it to store a flash drive.

The loop can be enlarged as you see fit in order to accommodate different chains or strings. I used a gold chain (ironically came in one of the vending capsules) to show it here.

Not much to tell. Should print as is, but there may be some support for the overhangs, but they're needed for the capsule to snap properly.

Note that with slight variations in capsule sizes and printer accuracy, test printing is advised, and appropriate scaling should be done to fit your capsules.

You can buy the capsules at any store, practically, but you can also buy them bulk on eBay for very low prices.