You can use pages merge feature together with address book to autofill your contact details into any document you create.
1 -> Open Pages and select blank template
2 -> Create a document as you want it then insert the required Merge fields
Insert -> Merger Fields
3 -> Open Address Book, select some of your contacts and drag them to your numbers document
4 -> At this point it will ask you if you want to create a new document or send it straight to the printer
Select New Document.
This should have created a new document and all the information for the merge fields should be autofilled
A great idea for next years Christmas cards.