The Norse runic alphabet. Used in divination, seid, and many other forms of knowledge-seeking, soul-searching, etc. Whether you use them to worship the gods, seek solace within yourself, or simply think they’re cool, here are a few links to where you can find them, and kits on how to make your own.
(You will, of course, need to come up with your own wood/object you wish to carve into. Scour the forest, maybe you have something close to you, but choose one that means something to you)