Oh!
I got help! You are so kind!
Well, if they are lost we could put some speakers around and connect a computer game ( for my son) , alternative the Signaturmelodie of Big Brother ( for my daughter), they will come out sooner then the music is over ha ha.
A big lamp so they can see where they are going would be nice.
Well, food to give when they are found, they are always hungry. And something to drink.
Rope is good and warm blankets. And maybe earprotection, becuase I will be mad and yell a lot at them; what the He"#€/ they where doing in that cave!