annalaye I've also seen some that are at a craft store like Michael's or AC Moore (maybe Hobby Lobby has them? we don't have one here) but they are brown paper mache' type and then you paint them whatever you want them to be. I like the wooden ones but the ones I've found are heavy and might have to have anchors to hang on a wall. I'm going to get the paper ones for my boys and get a big sized one for their last intial and smaller ones for first and middle name initials. Good luck finding these!
One huge statement through art doesn't always have to mean big bucks. Simply framing something inexpensive like a map or even blueprints can be just as artful as something from a gallery. For blueprints online, check out this Etsy shop.
A nautical theme works well for boys of all ages. In this room, the colorful bedding adds tons of energy and interest.
Tip: If you want to leave the walls white, layer on color and pattern in the bedding. It will keep the space from looking too sterile. Boys are very visual and do appreciate color.
Go big, even in a small space. These metal architectural letters make a huge impact in this contemporary, nautical-themed room. Smaller pieces would make the room feel cluttered.