550 Paracord Sling. Its not a DIY but it's also not that expensive and if you are already handy with knots and paracord, you could make this by studying the patterns.
UPDATE: This post originially ran on June 12, 2012, but now that we’re (dare I say it) in the last month of summer, we want to make sure we hit all the items on our summer to-do list before it comes to an end! This, of course, include
Beautiful, open barn. Could have a lobby, break room, bunkhouse, and bathrooms upstairs. Horses, tack, feed, and hay downstairs. The upper could also look out into the arena as a second level, and include an announcers' stand.