Usually you get a reputation of a freak if you tell you're a LotR fan - or so happens nearly always in my case. (I've stopped telling it, if the discussion isn't about LotR, fantasy or books.)
My way is carrying two pins/brooches at my backpack. Another says "Mae govannen!" and another is a picture of Gandalf. Sometimes I also carry LotR in the school corridors, but that's only when I read it.
Third way: if you have tolkienist friends, talk about LotR with them in public places. That might help.
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Like the stars chase the sun, over the glowing hill I will conquer
Blood is running deep, some things never sleep Double Fenris
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