The BladeForums.com 2024 Traditional Knife is ready to order! See this thread for details:
https://www.bladeforums.com/threads/bladeforums-2024-traditional-knife.2003187/
Price is $300 $250 ea (shipped within CONUS). If you live outside the US, I will contact you after your order for extra shipping charges.
Order here: https://www.bladeforums.com/help/2024-traditional/ - Order as many as you like, we have plenty.
The 2/10th of an ounce A. G. Russell Ultimate Pen Knife is what I now have on my key-chain. Smallest and lightest are my criteria for a key-chain knife as it's just a backup for my normal pocket folder, a Mnandi.
Some years ago, before I had the Mnandi, I tried putting an Umfann on my key-chain. I found the Umfann a bit unwieldy when it was attached to my key-chain and it was just easier to carry it lose in the pocket.
Leatherman P4 if we are talking little multi. Spyderco Ladybug for knife
I have a SAK Classic on my key chain also. Mine is black and was generously given to me by someone on this site. Great people we've got here.
I can't tell you how many times that toothpick has come in handy!