Still life subjects mean many different things to different painters. To me, a still life is anything "still", i.e., not moving and can be found both indoors and out. With than in mind, here's some demonstration paintings from several of my recent still life watercolor classes!
"Still Life 1_1",
watercolor, 12" X 16"
"Still Life 1_2",
watercolor, 12" X 16"
"Still Life 2_5",
watercolor, 15" X 22"
"Sunflowers 7_2",
watercolor, 12" X 16"
"Sunflowers 4_2",
watercolor, 12" X 16"
"Sunflowers 8_2",
watercolor, 12" X 16"
"Still Life 3_2",
watercolor, 12" X 16"
"Still Live 3_4",
watercolor, 12" X 16"
"Flowers 3_2",
watercolor, 12" X 16"
"Flowers 7_2",
watercolor, 12" X 16"
"Flowers 5_8",
watercolor, 12" X 16"