LOL...how did you know my dad had a guide gun?

The reason I'm going for the spy capsule is because of limited volume, which is also my problem.

I tried the altoids tin and found that I'm just about to the point where I've found that it's too big and I'm not going to carry it so I'm scaling down. So I have a whistle, mini mag/flint stick, scraper, leatherman P4, and spy capsule. Through trial and error this is the most convenient way for me to carry survival gear 24/7, at the moment.
How did you know I had plastic vials?

Can you really get 3 tinder-quicks in there?
I am intrigued about char cloth and have read about it but I'm concerned about the smoke flaming up on my stove and I don't really have good access to campfires especially now that it's summer. Can I make it with tinfoil and can it be done on a BBQ? Gas BBQ that is.
-I like the way you are thinking, you have recognized it needs to be small enough that you will carry it.
-TinderQuicks are probably the densest material, giving the most "lights" as you can peel and fluff a little of it at a time.
-You CAN make charcloth on a Gas Grill.
Here is how I would do it: Take an aluminum soda can, STUFF some 100% cotton inside (Blue jeans material is real good, nice and thick). Cover the can top with aluminum foil, but, make a small hole in the foil, so that it can "OutGas".
Cook the Can, you may have to do trial and error hear, Low enough so you don't melt the can, but High enough that you scorch the cloth inside. Make it as hot as possible without melting the can. Of course, when you think you are done, you may have to cool the soda can and cut it open.
You could also use a soup can (tin can) which may hold up to the heat a little better and allow for "peeking" since the entire top is typcially removed, but, you'll still have to cover with aluminum foil, don't forget the small hole for outgassing.
The object is to burn the cloth inside the can, so it doesn't catch flame, but, you allow all of the gasses produced to leave the container. You are left with Charcloth, which is basically/mostly carbon. Will catch a spark easily.
Downside to charcloth is that it is fragile and not waterproof.
Upside is that it really really can catch spark with the weakest of flint output.
It is flat, so can be stored in a flat container very well, even in a wallet, inside a plastic sleeve, baggie.
Good Luck.