Step 1: The Liquid Crystal Displays
The Arduino is a 16 x 2 LCD with 16 through holes for wires or connecting pins, 8 data inputs and 2 for LED light.
The LCD beside the Arduino LCD is a 16 x 2 LCD with 14 through holes for connecting pins or wires, 8 data inputs.
The next LCD is a 16 x 1 LCD with 10 straight connecting pins 4 data inputs.
And the last LCD is a 16 x 2 LCD with long enough leads to keep as is, 8 data inputs and 2 for LED light.
The LCDs I am going to add pins to are the first two.
Step 2: Tools
Long Needle Nose Pliers
Spring Loaded Tweezers
Soft Wire Brush for cleaning the soldered joints.