Hi Anna:
I find colors that go with my plants or my house, and tuck the ornaments into pots and beds. I love spheres, so those are often easy to find as Christmas ornaments. Sometimes I find glass balls like the one in the photo that work well as miniature gazing balls. I also love the mirrored "disco ball" ornaments in the garden----they reflect the light and add points of interest in different spots. Sometimes I hang ornaments in my grapevines, too.
Janet