I decided that if I'm gonna do another craft show (& hopefully more than that in the future), then I'm going to need some sort of sign that represents my business. It was also kind of inspired by the 8" swirly fun wooden letters that I found at Hobby Lobby. 
I cut 4 identical pieces of wood with my miter saw (22 in. long, and I believe they were 1x5 or 6), then stained every other one with Minwax Jacobean stain and Minwax Red Mahogany stain. I attached them with Gorilla wood glue and stapled the back with a staple gun. I then put one coat of Minwax Polyurethane Gloss finish over all of it.
I spray painted the cute swirly letters with Rustoleum Painter's Touch spray paint (color: Nutmeg). 
I then knew I needed some thin cheap wood scraps, because I wanted to piece together a few pieces similar to the larger pieces I was mounting everything to. I found some cedar shims at Home Depot (they're mainly meant for paint stirring, or door and window installation for leveling material, etc . . .), but they also worked perfectly for what I needed them for. I sanded them and glued 3 pieces together. Then used Elmer's spray adhesive (a temporary bond) to temporarily attach the paper reverse stencil letters. 
Then spray painted them with the same color spray paint, Nutmeg. 

I attached everything with Gorilla wood glue . . . 
. . . and voila! It's ready for the craft show this Saturday!