Here is a Lego Rubik's cube that is 2x2x1 size. I got the idea from GeneralMervine, so I give credit to him. You can use any colors and/or decorative stickers, but I named mine the Death Cube, based on the sticker on the white side. And, if you find a way to make a 2x2x2 cube, tell in comments! So I will show you exactly how to make it so let's get to it!
Step 1: Build!
Step 2: You Are Done!
Now you are done so mix it up and solve it! Cya