To make the last two buttons on the left, use step four's technique but instead of Size 2 for stroke layer style change it to 1.
The first logo is a line in a new layer shaped into a square with a box on the bottom right. Use the pencil tool to create this. Set the layer opacity level to 45%.
Same with the second logo, its a circle shaped through a pencil.
Step nine:
Now the right side buttons, first up is the #9F4B2F button.
Create a #9F4B2F circle in a new layer and add this layer styles:
Blend Mode: Color Dodge
Opacity: 66
Noise: 0
Color: #FFFFFF