It's probably not exactly what you would choose but I carry a small plastic trowel by Fiskars. It is made for gardening but it's cheap, strong and light, perfect for digging catholes or small fire pits. The handle is also hollow with room for TP, matches, etc. I keep a small lanyard of paracord to keep it handy and to help pull the plug from the handle to access the contents. I keep in a heavy duty ziplock baggie to keep sod and mud off my other stuff.
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“I'd rather have questions that cannot be answered than answers that can't be questioned.” —Richard Feynman