The magnifying glass works pretty good. I've heard of using the same technique with water in the corner of a plastic ziplock bag. I've only tried the water in the bag once but didn't work for me because the sun was too low in the sky. I had dug a snow cave after last years blizzard and by the time I finished it was almost sundown. Admittedly I used a zippo that time.
Potassium perm also works w/ antifreeze. Don't breath the smoke.
Pool shock and brake fluid, same thing. Don't breath the smoke. (chlorine gas)
Bowdrills are very reliable w/ lots of practice.
All my vehicles have one of the 'light my fire' firesteels hanging on the turn signal lever. It's a good place to start if you want to learn some easy to master alternative skills.
Steel wool or homemade charcloth will catch a spark quickly.
In fact, try rubbing some fine steel wool across the top of a 9 volt battery. Fire is easy to make,,,,when ya don't need it.
Start off with the easier ones and work your way into primitive.