Microsoft Store (link for reference only) offers Select Email Subscribers a $5 Microsoft eGift for Free when you follow the steps below.
Steps:
Check your account for an email titled "Order by 12/21 9PM PT for holiday shopping"
Click on the ‘Bird’ next to Limited Time offer
Select Redeem Now under the following message "Our holiday gift to you."
You will receive a $5 eGift Card Code to redeem on your account.
https://www.microsoft.c
https://www.microsoft.c