Here are several photos free for personal use (image quality is adjusted for a mid-size JiXii puzzle, ca.600x450pts).
If you like to save a photo to your hard disk, click the image long enough to let a popup menu appear and select "Save this Image as..." (or similar).

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Green 1  (376k)	Green 2  (392k)
Dandelion 1  (388k)	Dandelion 2  (388k)