Picket Twister by -- Homemade picket twister constructed from tubing, bar stock, and set screws. http://www.homemadetools.net/homemade-picket-twister-4
Off-Road Hard Sided Popup Trailer - Pirate4x4.Com : 4x4 and Off-Road Forum
improvised metal shaping anvils Home made workshop tools - Page 4 - The Jockey Journal Board
I saw this cool, relatively simple #anvil pounder set up but the link seemed fishy & I wasn't able to source the image through google, sorry. If you have better luck please let me know in the comments below...