While the concept of a jetpack is intriguing, the one featured in Thunderball would be impractical due to fuel limitations and stability issues. Modern jetpacks are not as powerful or maneuverable as depicted in the film.
This iconic weapon, which can be assembled from everyday items, is highly impractical. Real-life firearms require precise engineering and materials to function safely and reliably.
While the ejector seat is a memorable feature, it would pose numerous safety and legal issues in real life. The engineering required to ensure it works safely in a moving vehicle is beyond practical limits.
The idea of a car transforming into a submarine sounds cool, but the engineering challenges and design requirements to make such a vehicle functional in both modes make it highly improbable.
While laser technology exists, the idea of a watch capable of cutting through metal is far-fetched. The power requirements and safety concerns would render such a gadget impractical for everyday use.
Although it’s a clever plot device, a pen capable of exploding would be extremely dangerous and impractical. The safety mechanisms needed to prevent accidental detonation would make it unfeasible.
The concept of rendering an object invisible is more science fiction than reality. Current technology is far from achieving true invisibility, and the complexities involved would make it unworkable for practical use.