Once you have updated your game to the Christmas update you will receive Christmas gifts everyday!
NOTE: The gift is free but is in the buy mode, not inventory
Dragon Ice Sculpture- can be found in the decorations section of the buy mode, must be placed on a table not the floor
That is all the gifts but you can unlock some great prizes by completing the Christmas quest can be found here: https://thegirlwhogames.wordpress.com/2014/12/14/the-sims-freeplay-the-great-xmas-mishap-quest-2014/
Once you have got your key for the weekly tasks you can no longer do anymore that week, you just have to wait until the next week starts- I don’t really know why everyone is moaning about this as there was no point completing more than the weeks worth anyway, you don’t get any more keys for completing more than needed!
Thanks for reading!