There are a few knots that you can do so much with. I try to stay away from gizmos when a knot will work just as well. It is a useful skill to have. I keep a piece of paracord on my desk.
Playlist of Essential Knots:
• Essential Knots
Names of knots:
Bowline
Truckers Hitch
Taunt-line
Sheet bend
Butterfly
Siberian Hitch
Some bonus knots in the playlist
Kyles Overlanding channel:
/ @squaredropadventures
Kyles ham channel:
/ kyleaa0z
Franks Channel:
/ @tankradio
I've bought paracord many times from Tough-Grid
https://amzn.to/3URClUY
I've also bought some of this high-viz reflective paracord
https://amzn.to/3URClUY