Today I ran a game for my son (11) and daughter (8) and their two friends 10 & 8. They had to go and convince an Ettin to fight a Hill Giant to protect their village - but to get to the Ettin they had to cross a magic forest - with portals into the Feywild. They were ambushed by goblins in the forest and discovered the trees were magical when the brave Tabaxi fighter MiaoMiao tried to scamper up a tree trunk to hide from the ambushing Goblins. There was a "poof" and then a small pile of dust formed...