You will notice that De Efteling is very clean and one of the reasons is these men aka "Big Mouth" they call the children to throw rubbish into their mouth, it makes it like a game
You'll hear them shouting "Papier hier, Papier hier" Danku wel - when someone throws a piece in (Paper here, Paper here, Thank you)
Because all the children want to collect as much garbage as possible...
You'll notice 'Holle Bolle Gijs' who keeps calling 'Papier Hier' (i.e. paper over here). If you feed him paper, he'll say thank you.
Aware : he's always hungry!
Well... take a good luck at this picture... this is the bank!
So if you need some money, go to the treasure box and cash some money from your account (yeah, your account... all dreams come true in De Efteling except this one).