Colored Wrapping paper
Step 1: Cutting
My box was 24x24x24. The tiles were 7 and 2/3 inches h and w.
Use your Xacto knife for the big stuff, and trim excess cardboard with the scissors.
Step 2: Wrap it up
I used wrapping paper for this. I had blue red green yellow and orange.
Wrap it up just like a gift for your girlfriend!