While it's one thing to search for swings made of responsibly harvested wood, it's quite another to look for ones made from reclaimed wood. Here are four resources for Reclaimed Wood Swings, one being by far the most popular: Peg and Awl, whose name is mostly synonymous with reclaimed wood products. The runner up to Peg and Awl's seat swing is The Original Tree Swing, a disk swing that will make you feel decades younger.
Reclaimed Wood Swings, images above, details below.
1 Tree Swing Made of Reclaimed Wood, $150 from Peg and Awl
2 The Original Tree Swing, $42.99 from The Original Tree Swing
3 Swing, $250 by Coal Creek Studios
4 Reclaimed 4' Oak Porch Swing, $250 by Waynes Woodworking
(Images: as linked)