A hypodermic syringe shaped like a cuddly creature to prevent children from being afraid of needles.
The first problem we see here is that the way this syringe is designed, the massive needle is clearly visible and juts out of the front of whatever adorable, kid-friendly object is chosen. The second thing is, do we really want to make syringes more appealing to kids? Won't they just end up stealing them and accidentally stabbing their friends or themselves in the eye? Why did the inventor have to make the bunny's face so kissable?
Of course, even the dumbest of kids will eventually realize that this cute-looking contraption brings them nothing but pain, thus learning to hate anything even remotely adorable. Like, you know, babies themselves. Hey, they'll probably grow up to invent things like these. You know what they say: "The road to hell is paved with cuddly-animal-shaped hypodermic syringes."