-cardboard
-scissors
-a knife
-a stapler
-a hot glue gun
-white paint (I used spray paint)
1. Cut your cardboard into 3 of the same letter (whatever letter you desire).
2. Staple two of the cardboard letters together.
Hot glue the third on top.
Use a knife (or some other tool) to carve lines down the letter, giving it a wood-like texture.
Then paint or spray-paint it (I spray-painted mine), but not completely. You want to leave some brown showing.
That's it!