What better way to celebrate Arbor Day than with a tribute to the greatest of all tree-like aliens (Flora colossus), Groot?

Mondo has debuted this Baby Groot enamel pin, designed by Tom Whalen, destined to be the must-have accessory on Knowhere -- to say nothing of Planet X.

The company is donating 5 percent of all of today's website sales to Austin Give 5, an organization that teams with businesses to support local nonprofits. That seems like the perfect excuse to preorder a $10 Baby Groot pin ... today. It's expected to ship in four to six weeks.