Free images results:

Upright pictures, stock photos and images


Hex Nuts Royalty Free Stock Image
Author: Tootles
Meerkat Stock Photography
Author: Steveinnz
Seaside Stock Photography
Author: Abdone
Seaside Stock Image
Author: Abdone

Also, here are some commercial RF-licensed images that match your search criteria:  
Upright Piano Royalty Free Stock Photo
Author: Yio

Explore more commercial options: More Upright Stock Illustrations & Vectors | More Upright Stock Video Footage