If you're passing through Grand Central Terminal during the next week be sure to swing through Vanderbilt Hall, where a group of artists is showing arboreal-themed artwork to raise money for local non-profit environmental and park groups. The centerpiece of the "Art for Trees" show is arguably Kathleen Vance's "Gifford's Forest," a charming mixed-media replica of a miniature forest "growing" in a Samsonite suitcase. Good luck getting that through airport screening, right?

The pop-up art gallery is sponsored by TD Bank, which is also displaying replicas of the artwork in more than 100 of its branches in NYC this month. Proceeds from sales of the artwork will go to benefit the New York Restoration Project, Brooklyn Botanic Garden, NY Trees and Friends of the High Line, among other non-profit groups. (TD Bank has also promised to cut the bank's paper usage by 20 percent by 2015.)

Art for Trees is on view in Grand Central Terminal through October 12th, and then the work reappears for one day in the 14th Street Passage of the High Line on October 24th.