1920x1080 Cute And Puffy Cartoon Clouds | Hoverin...

For a bit of personality, Freepik features "smiling" cloud illustrations that add a friendly touch to your screen. Pastel & Aesthetic Clouds

These options feature a clean, vibrant aesthetic typical of modern animation:

For a traditional look, Shutterstock offers a variety of "hovering" cloud styles with soft blue backgrounds.

Sites like Wallpapers.com feature artistic, watercolor-style clouds in pink, purple, and blue hues.

For a softer, more calming vibe, these pastel-colored backgrounds are excellent: