Decoy Detonator
If you need a distraction, this Weasley product is just what you're looking for. In the Half-Blood Prince novel, Fred tells Harry these will run off when dropped and then "make a nice loud noise out of sight" in order to act as a diversion. We get to see it in action in both the Deathly Hallows book and film when Harry uses a detonator when sneaking into the Ministry of Magic. It works perfectly and shows the product can be quite versatile. From using it for small things and jokes to important things that can have an impact on the larger wizarding community, you never know when a Decoy Detonator may be needed.