Meritline cuts 40% off LED T-Shirts via coupon code "MLCS26XN", with deals from $11.39 after the discount. With free shipping, that's the best percent-off deal we've seen on such T-shirts from Meritline; however, our last mention had shirts starting at a lower price point after coupon. Coupon expires December 28. Expect most items to take two to three weeks to arrive.

A best bet is the Autobot LED T-Shirt in Black (pictured) for $18.99 before the above coupon, $11.39 after. With free shipping, that's the lowest total price we've seen for such a shirt. It features a sound-activated LED and operates on four AAA batteries (not included). It's available in sizes S to XXL.