Happy new year everybody 
In case you happened to be in Germany for new years eve ( Silvester ) and wondered why you got little knickknacks ( Kleinigkeiten ) they are meant to wish you good luck for the next year, e.g.:
das Glücksschwein 
der Glückspilz 
der Glücksklee 
der Glückskäfer 
der Glückspfennig 
…and last but not least “der Schornsteinfeger” ( person who cleans chimneys ) is a sign for good luck 
These site explains it to:
Do you believe in lucky charms?..and if what’s your lucky charm?
A rainbow 
by the way is supposed to be also a sign for good luck
…Friday the 13th isn’t …so be careful tomorrow 
@Florian1996 you might be interested in this