No seriously, I always get blank stares when I ask people, I’ve called them wall chargers or power bricks, my friend called them plug chargers, my fiancee calls them dongles. What do you call these around your house, like when you’re asking someone if they’ve seen any (______)'s
transformer (short for power transformer)
I think that’s actually one of the official german words for it (Transformator - transformer), alongside Ladegerät - charging device, or Netzteil - grid part.