I ran across this: Live Fire Gear and I got one. I have not had time to test it yet, but it advertises that it is a reusable tinder that lasts for hours. It has a lid that you can close to put it out. I got the sport version (smaller) and it is a very small form factor:
Length: 1.89"
Width: .91"
Height: .35"
Weight: .5 oz

The next one is the Pocket Bellows. It is a telescoping metal tube for directing air into a fire with more accuracy, force, concentration, and at a safer distance. Their page: Pocket bellows

I have tested this and it does help in delivering air to the right place in a fire more efficiently and effectively. I have tried their tinders, and still prefer cotton balls with petroleum jelly, but they do work. Their ferrocerium rod with a magnesium-core flint striking tool does give decent sparks and packs small.

These are items that are small enough to include in a pocket survival kit. I post them to provide information to the forum, and have no connection at all with either company.