Here are some reliable sources for **FREE** clip art (watercolor and otherwise!). Please note that the availability and licensing terms of the clip art may vary on these websites, so always check the individual terms of use before downloading and using any clip art in your projects.

1. 123FreeVectors: A website offering a wide range of free vector clip art resources.
2. All-Free-Download: A collection of free clip art and design assets available for download.
3. Angie Makes – Free Girly Graphics: A source of free feminine-themed clip art and graphics.
4. Angie Makes – Free Vintage Botanical Graphics: Provides free vintage botanical-themed clip art and illustrations.
5. Behance – FREE Watercolor Flowers Clipart: A gallery featuring free watercolor flower clip art from various artists.
6. Clipart Library: A library with a diverse collection of free clip art across different categories.
7. Clipart Panda: A website offering free clip art in various styles and themes.
8. Clipart Queen: A source for free clip art and graphics, especially for kids and educational purposes.
9. Cliparts.co: Provides a collection of free clip art and vector graphics resources.
10. Classroom Clipart: A repository of free educational clip art and illustrations for teachers and students.
11. Clker: A platform offering free clip art and vector graphics that users can edit and customize online.
12. Design Bundles – Little Garden: Provides free design resources, including clip art with a little garden theme.
13. Designs by Miss Mandee: Offers free clip art and graphics designed by Miss Mandee.
14. FG-A – Free Graphics Archive: A source of free clip art and graphic resources for personal use.
15. Flaticon: A website specializing in free icons and vector-based clip art.
16. FreeClipArtNow: A collection of free clip art and illustrations available for download.
17. Free Pretty Things For You: Offers various free clip art collections with a feminine and pretty aesthetic.
18. Free Watercolor Art on GetDrawings: Provides free watercolor art and illustrations for download.
19. Freepik: Offers a large collection of free and premium clip art, graphics, and design resources.
20. Free Watercolor Cliparts on Clipart Library: Watercolor-themed clip art resources available for free download.
21. Free Watercolor Sunflowers Clipart on Teachers Pay Teachers: Free sunflower-themed watercolor clip art for educational use.
22. GetDrawings – Free Watercolor Art: Provides free watercolor art and illustrations for personal projects.
23. GoGraph – Watercolor Vector Clip Art: A selection of free watercolor-style vector clip art.
24. Hellas Multimedia – Web Images: Offers various web images and clip art resources for free.
25. Homemade Preschool: Provides free clip art and resources for preschool and educational use.
26. Lee Hansen Graphics: A collection of free clip art and graphics by Lee Hansen.
27. MyCuteGraphics: A source of free cute and whimsical clip art for personal and educational use.
28. Openclipart: A community-driven platform offering a vast collection of public domain clip art.
29. Packrat-Pro: Features a selection of free clip art resources for personal and educational purposes.
30. Pexels: A platform with a wide range of free stock photos, illustrations, and vector graphics.
31. Pixabay: Offers a vast collection of high-quality images, illustrations, and vector graphics under the CC0 license.
32. TheHungryJPEG – Free Autumn Watercolor Clipart: Provides free autumn-themed watercolor clip art.
33. Unsplash: Known for its stunning photography, Unsplash also offers free illustrations and vector graphics.
34. Vecteezy – Free Watercolor Clipart: A collection of free watercolor-style vector clip art resources.
35. Vintage Holiday Crafts: Offers vintage-themed clip art and illustrations for various projects.
36. Webweaver’s Free Clipart: A collection of free clip art and graphics across different themes.
37. WPClipart: Provides free clip art and illustrations for personal and educational use.
38. Write Lovely: Offers free clip art and design resources with a focus on lovely aesthetics.