Hm. I'd suggest a second advantage of the "ball with fuse" or "stick with fuse" - and from there, the "C4 with unrealistic timer LED" makes a lot of sense:<p>The fuse can act as an agent of suspense, just as Hitchcock described it. It's a very simple indicator - a red dot or a flame, and the length of the fuse is how long to go until an earth-shattering kaboom. And it's obvious what's going to happen to a character if they hold it, so it's easy to create suspense. "Oh no, now the protagonist has the bomb. Oh yes, now the villain has it. Oh no, now the villain tricked the protagonist and put the bomb in their pants!"<p>That is much more interesting from a story telling point of view than a realistic bomb - a bunch of C4 with a mobile phone strapped to it and zero way to understand when it will ruin your day. Unless you include the trigger for those in the story, but then complexity grows.