After installing GeCla, you have access to two versions - the standard version - GeCla - and one directed primarily to children - GeClaMini: for example, the capacity to distinguish a frieze with only translations from other which also has a "horizontal" reflection is within reach of very small children.
Here are some collections of images that you can classify with GeClaMini.
To start with (1):
To start with (2):
Winnie the pooh: