When my daughter asked me if I could make a sign for her front door for her new pre-school/daycare, I immediately said yes. I love to work with vinyl. It cuts so nicely and is so easy to work with.
I found the saying that she wanted to use, then picked out the fonts I had on my computer and created this piece. I bought a 12 x 12 chalkboard piece from Joann Fabrics. I added paint to the edges and then put the vinyl on it.
Of course, I couldn't stop there, because not everyone that naps is a child, so there are a number of different options for everyone in your life, including you.