Light the candle and put the straw over it so it melts just a little bit. Then take the pliers and squeeze the melted part of the straw.
Add the napkin/tinder into the straw. Then melt the other side shut.
Step 4: Done
Now you can stick it in your backpack and keep it, in case of an emergency. You could also put matches, dry grass, or anything you would need in a survival situation that could fit easily into a straw.