Maybe because I'm also an English teacher, one of my favorite scrap supplies is letters--stickers, die cuts, you name it, I love it! However, I always seem to run out of certain letters--e, i, r, and n especially.
One way I use letters without worrying about running out of them is to make use of my patterned paper, like this gorgeous sheet from Funhouse:
I actually used two sheets, though you could do this with just one. I distressed the cut-out letters with ink and pen, then adhered them with dimensional stickers. (If you're using just one piece of paper, back the cut-out portion with a scrap of neutral cardstock.)
Look at the nice shadows that make the title stand out!
So the next time you want to use letters for a title, but like me, you may need to buy a vowel, look in your patterned paper stash and start cutting.