The benefits of ice-breakers are well-known. Disadvantages are that you probably don’t always have time for fun before starting. Grown-ups particularly like it to the point, short and full of practical information. While fully inconsiderate of ice-breakers, when grown-ups have a lot of fun, they collaborate more and most importantly for language lessons, they communicate more.
Here’s a few for adult lessons:
Surely kids are the ones challenging more and nicer and funnier ice-breakers every day.
Here’s a few for demanding kids too: