Sierra Madre starred in the 1956 version of Invasion Of The Body Snatchers, but today you would be hard pressed to find any seed pods.
However, you could argue that the Starbucks just off the city square is a precursor to more sinister Body Snatcher events (The Onion stupidly went to subscription-only for back issues so to route around damage here).
Though the coffee chain’s specific plans are not known, existing Starbucks franchises across the nation have been locked down with titanium shutters across all windows. In each coffee shop’s door hangs the familiar Starbucks logo, slightly altered to present the familiar mermaid figure as a cyclopean mermaid whose all-seeing eye forms the apex of a world-spanning pyramid. Those living near one of the closed Starbucks outlets have reported strange glowing mists, howling and/or cowering on the part of dogs that pass by, and electromagnetic effects that cause haunting, unearthly images to appear on TV and computer screens within a one-mile radius. Experts have few theories as to what may be causing the low-frequency rumblings, half-glimpsed flashes of light, and periodic electronic beeps emanating from the once-busy shops.
Supposedly there was a Sierra Madre tradition that on Halloween the downtown city square would be decorated with seed pods, but I haven’t tracked down anything further. However the nearby LA County Arboretum does invite kids to use “seed pods” in their pumpkin decorating event so apparently eternal vigilance is still needed.
On the plus side the Bean Town Coffee Bar has free wi-fi.