RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.
Roll20 - Roll20 is a suite of easy-to-use digital tools that expand pen-and-paper gameplay.
Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.
Astral Tabletop - Create, host, and manage your tabletop role-playing games — online or in person
Slickdeals.net - Slickdeals: The Best Deals, Coupons & Discounts on everything
D&D Beyond - Official online toolset for Dungeons & Dragons tabletop gaming