One thing I want to be able to do is to know my cubes incredibly well and one important thing for that is to be able to differentiate them from any side, not just from the logo! I have learned to tell all these 2x2x2s apart based on a picture of the yellow side, this means looking at minor details such as the shade of yellow, the size of the screw and the area around the screw. All of the 2x2x2s featured in this video are listed on speedcubing.org