Meowbox December 2018 Theme Spoiler + Coupon! Posted by Hello Subscription on November 28, 2018. Subscription Box Spoilers / Meowbox Spoilers Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification We have a spoiler for the December 2018 Meowbox! The theme is HOLIDAY! DEAL: Use HELLO10 to save 10% off your subscription! What do you think of this month’s theme?