There have been a couple threads on survival gear and another on small items and the old Altoids tin survival kit came to mind. The small tin measures 3-3/4"x2-3/8"x7/8" and
The Altoids Tin Thread.
Gear talk: Altoids EDC tins- are they still a thing? – Three Points of the Compass
Dress Up and Organize Your EDC Survival Tin Kits You Get (3) Three Durable, Waterproof, Write-On Survival Kit Checklist Stickers that are Sized to Fit
DIY - Altoids® Tin - Tiny Survival Kit Checklist Stickers - 3 Pack
Altoids Tins DIY Projects: How To Make Camping Kits From Mint Tins
Seven Star Altoids Tin Caddy Rack Wall Desk Mounted Storage Collection Organizer for 3, 5 or 7 Tins White
Altoids tin kits - Backpacking Light
Altoid Tin Fire Piston Kit Camping Hunting Survival Prepper Scouts
Pocket Sized Kits (Altoid) - Instructables
Altoids tin kits - Backpacking Light
How to Build Your Own Altoids Tin Survival Kit - ManMadeDIY
Top 10 cinnamon altoids ideas and inspiration
Altoids Tin Travel Survival Kit Multi-tool Flashlight Knife for Camping Hiking Travel
Altoids Fire Kit : r/Survival
Altoids tin kits - Backpacking Light