You will need:
1 Large Ice Chest.
1 Lamp with a flexing arm.
Small amount of strong adhesive (I used some spare epoxy)
Magic Sculpt self-hardening epoxy clay or other filler material.
*A Dremel is HIGHLY recommended!*
Step 1: Remove the drain plug
I've checked on a few different coolers and they all seem to just unscrew, doing this can be as easy as jamming an oversize flat head screw driver in and twisting.