A Pen with a Secret: Exploring the Invisible Disappearing Ink Pen
Imagine sitting at your desk, jotting down notes or leaving a secret message for a friend. But here's the twist—after a few moments, the words you wrote start to vanish.…
Ace Your Exams with the Exam-Passing Pen
Ever found yourself in a study slump, staring blankly at your notes, hoping for a miracle to absorb all the information? Enter the Exam-Passing Pen, the quirky and amusing gadget…