I accidentally found this thing in my grandfather’s garage, and I didn’t immediately realize what it is and what it is for. Do you know what it is?

Key Physical Details (from the item description)

Length: 10 inches
Width: About 3 inches
Capacity: Approximately 5 1/2 oz (for bead candy)
Material: Glass
Form: Horn-shaped, with a pointed tip and decorative pressed patterning
Why This Object Confuses Collectors

Its horn-like silhouette leads many people to assume it is a drinking horn or novelty vessel.
In fact, the design makes more sense as a display-and-hold accessory—either for flowers in a car or small candy pieces—especially because it could be tethered with a cord for stability.
Quick Summary of “What It Is”

A vintage Cambridge Glass horn-shaped container most commonly recognized as a car flower vase, and also described as a bead candy holder, combining practicality with decorative design.