While searching for some ideas unrelated to anything, I came across this: A 2011 Tamiya Calendar. Tamiya wanted to create a lasting bond and also more exposure with their customers and so, they created this calendar which, when the month is completed, you can ‘tear’ off the month and use the parts to build a model. All in all, you would have 12 models.
http://adsoftheworld.com/sites/default/files/styles/media/public/images/tamiya_model_kits_shop_tamiya_calendar.jpg
Update 2022:
OK, so the image above is gone, so please try this link below:
https://www.adsoftheworld.com/media/direct/tamiya_tamiya_calendar
