Sliime Coupon: Get 30% Off Subscription – TODAY ONLY! Posted by Hello Subscription on December 7, 2018. Holiday Subscription Box Deals & Doorbusters / Subscription Box Coupons & Deals Make the first comment! Hello Subscription independently researches and reviews the best subscriptions and products. Things you buy through our links may earn us a commission. Save for LaterGo to commentsNotification It’s the Cratejoy 12 Days of Christmas Sale! Sliime: 33% off on all subscription orders! TODAY ONLY with coupon code 12DAYSGIVING! A monthly subscription box for Slime Lovers. Every box contains slime and goodies you will LOVE! Visit Sliime to get this deal!