T-Rexes in multiple variants, Triceratops charging and standing, Stegosaurus, Diplodocus, Velociraptor, and Yoshi (technically a fictional dinosaur, but we'll allow it). Prehistoric and proud. These are a natural fit for kids' rooms and playrooms — a T-Rex mural on a bedroom wall is a timeless move — but they also work well in science classrooms, natural history museum gift shops, and nature-themed restaurants. Stencil them large for maximum impact, or use them as a repeating pattern on furniture and cabinets for something more subtle.
Not quite it? Make a stencil from any photo or logo, type text in any font, turn a whole font into a stencil font, spray a QR code that scans or design a repeating wall pattern.