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
This is a line lump, the alternative to the wall wart. Both were slang terms, it just sounds like only one of them stuck around.