Advanced tabletop board games tend to have a "turn card" or some other kind of Quick Reference card to help new players understand what they are able to do on their turn but it always bothered me that D&D 5e didn't have that as well!
Many have iterated on this and created full single-page quick references but I set out to create something that truly condensed things down to a single, legible, and printable card.
Side 1: D&D 5e Rules Cheat Sheet
Shows you everything you can do on your turn (Movement, Action, Bonus Action, Free Action) and provides a section for each of them with greater detail
Has a separate section outlining Reactions
Side 2: Player Character Quick Reference
An "on-the-go" Player Character Sheet including only the most important things for anyone's first game of D&D
Ability Scores & Skills are categorized and utilize bubbles as bullets so players can fill them in to flag which ones they are "proficient" in
Includes an extra space for players to doodle their character art, take brief notes, and track their most important stats (Armor Class, Current and Total Hit Points, Speed, Death Saves, Proficiency Bonus, Inspiration, and basic Weapons