Here are a few ideas you can use when stuck for a starter. They require no advance preparation.
Easy starters in Languages
Lovely ideas, thank you for sharing! Just what I need!
Fab to have a list of ideas like this!
I'm just starting out in teaching so having a list of ideas for starters like this is extremely helpful for when I'm tired and therefore feeling v uncreative! Many thanks : ) !
Just what I was looking for when stuck for inspiration