Tomorrow isn’t just Tax Day, it’s also Free Coffee If You Bring In Your Own Travel Mug To Starbucks Day. It’s all part of eco-friendly, Big Picture thingy, which has something to do with saving trees. That’s all well and good, but more importantly — FREE COFFEE!

Apparently all you have to do is bring in something that qualifies as a “reusable travel mug” to score the gratis java.

Be warned that we don’t think an empty McDonald’s cup from earlier in the morning would count.

If you truly do care about the planet and stuff, feel free to check out Starbucks site for info.

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