1 DIY Simple Porch Swing, Lolla Agaton via Remodelista
2 Java Teak Hardwood Outdoor Patio Porch Swing, Amazon.com, $649. Crafted from sustainably-harvested teak.
3 Go Porch Swing, Design Within Reach, $850. Made from recycled plastic and is itself recyclable.
4 Barrel Swing Chair, The Conran Shop, $586. Made of recycled wine barrel staves—but you had us at "wine."
5 DIY Hanging Door Swing, via This Old House
(Images: credited as linked)