Planting seedlings. Kids crafts. We make little houses out of them sometimes.
Campfire starters; Cut them into strips along the fold lines. Roll them lengthwise tightly. Tie near one end with cotton string (or any natural fiber- hemp, linen...) Cut a bunch of slits into the other end and fan them out so it's like a little brush.
When you want to start a camp fire, you light the bushy end and put it under your firewood. The wax in the paper helps it burn slower and hotter so your wood can catch fire. I'll use several to get a nice campfire going.