Sorry for your loss, I have three old rescue labs all over the age of seven, one is ten and the oldest eleven. Already lost one lab a few years ago and not looking forward to seeing the rest depart. Never get easy.
We have a a number of Hultafors Outdoor Knives with Firesteels
You can see more details here in this thread OUTDOOR KNIVES
The price is £27 and you can pay via the paypal button below.