I use my computer fonts. Lots of variety here. Our printer is also a copy machine, so if I want bigger letters I enlarge them. Made a Banner a couple of years ago and took my printout to a Kinko's type store and had them enlarge the letters to 4". Worked fine. Also check stores that have art and school supplies. They usually have different kinds and sizes of letter stencils (that's what teachers use to get those letters posted in classrooms). Children's books and coloring books often have larger size letters.