If the fuel tablets fit in plastic tubes that hold quarters, they should also fit in the commonly available paper tubes that hold quarters. Not quite as sturdy as the plastic tubes, but you can surely fit in five tabs, seal the ends with tape, and you will have additional tinder as well. Put a water repellent coating on the tubes and they will make even more effective tinder.

I haven't tried this, but it ought to work. Must get some Gouglan's fuel tabs.....