Frohe Weihnachten - Fröhliche Weihnachten - Ein gesegnetes Weihnachtsfest- all for Christmas
Ein gutes neues Jahr- Ein frohes neues Jahr - Viel Glück im neuen Jahr- all for New Year's and if you want to combine Christmas and New Year's wishes ad an "und" in the middle
Yeah, I still live in England (unfortunately...) but I spent a few weeks in Switzerland staying with my partner at his family's house this summer. I really didn't learn much Swiss and I c ou ldn't even communicate with his grandmother apart from a mumbled "danke" and " grüezi" here and there!