I am looking for collections of images in a common format (.bmp, .jpg,
etc.), preferably in a zipped (.zip) file.  I am looking for
collections of categories, such as "music", "flowers", "artwork",
"famous people", "animals", "dogs", "landscapes", "objects", etc.  I
am willing to pay for these collections - but would prefer to not pay
a dime! These images would be used strictly for personal use/artwork.

For example...

I 'could' go to images.google.com and search for animals - and then
save all the images that are found - but I don't have the time or
patience to do this.

The size of the images can be random, as I can resize them to what I
need - as small as 30 pixels up to 3000 pixels.

I have searched all over the internet for "image collections .zip
files download", etc. and have no luck.  Help Google!