Kawaii Timer Countdown for Hydration Sticker Prompts

Design a series of kawaii-style vector images featuring adorable timer characters for hydration reminders. Each should include a playful, expressive face, a prominent countdown display with placeholder [Countdown Number], and thematic embellishments like water drops, cups, or fun accessories. Maintain a clean, graphic style with high contrast lines, no shading or gradients, on a pure white background, suitable for die-cut sticker production. Include variations with different facial expressions, themes, and icons to increase appeal and versatility.