Many lotions will work as well as they tend to have some concentration of animal fat in them and fat burns well. Frito Lay chips are excellent tinder if you have matches or a lighter. The amount of fat in them allows them to burn long and slow like mini torches almost. As far as catching a spark, maybe a frito lay scoop with a small amount of vaseline or some lotion. Catch the mag shavings in the scoop and then set off the sparks. It is something I will definately be trying myself since I know the chips burn.