ThinkGeek offers this Tetris Stackable LED Desk Lamp for $31.99 plus extra shipping after 20% off coupon code: SPIRIT (Exp. 06/11). Sales tax where applicable.

Why this deal is hot:
You save 20% off the retail price. This is the best deal found on this item. This scarf is perfect for any arcade game fan.

What this does and why you need it:
This Tetris Stackable LED Desk Lamp is a seven-piece interlocking light fixture for fans of Tetris. Dimensions: 7" x 4" x 1" (height and width vary depending on stacked pattern); LED light turns on when the pieces are stacked together.