Paper Folding

Basic Origami Folds videos by Happy Puppy Truffles - demonstrating how to make some of the steps used in many origami patterns.

Origami Patterns to Print by Origami
30+ Very Simple Origami for Kids by Origami Way
20+ Cute and Easy Origami Projects for Kids by Easy Peasy & Fun
15 Easy Origami Patterns for Kids by DIYS
15 Easy Origami Projects for Kids by Backyard Summer Camp
7 Origami Projects for Kids by The Spruce Crafts
How to Make a Paper Canoe - video by Mr. Creator
How to Make a Paper Popper video by Michael K. - easy to fold and with the flick of the wrist, can make a loud popping sound.
How to Fold a Flexagon - video 2.0 with updates from How to Origami
11 Levels of Origami: Easy to Complex by Robert J. Lang from WIRED - taking the idea of a paper cicada from very basic to very detailed.
How NASA Engineers Use Origami To Design Future Spacecraft video by Seeker - showing how objects can be folded to fit on a rocket and then unfolded in space to perform tasks, based on designs found in origami.

How to Make a German Paper Star - “Froebel Stern” by Craft Ideas. Multiple pages with text and photos, teaching how to make three-dimensional eight-point stars from paper strips. My mother's childhood neighbors made a set of these as a gift. They were dipped in beeswax and are hung on our Christmas tree.
How to fold notebook paper into an envelope video by Emily Dang - before texting, kids of the 70's and 80's wrote notes and folded them into an envelope to pass to a friend.
How to Make a Fortune Teller video by PPO - another project that was all the rage on the playgrounds over 40 years ago.

Booklet and Box projects that include instructions. Print as Actual Size for the lines to match up, or just use them as a guide for any scale.

Foldable Full-sized Canoe by OriCanoe - while looking for an origami pattern for a canoe, I learned that there is an actual canoe that can be folded for transport