A couple of designers took Steve Job's press conference suggestion to make an iPhone 4 antenna band-aid to heart. The product is for sale in an assorted color six-pack for five bucks plus shipping. The two are now struggling to keep up with orders on the web site Etsy.
Reports have suggested that electrical, duct, or even scotch tape applied to the lower left hand side of the iPhone 4 alleviates antenna problems when the area is touched. The idea behind the Antenna-aid is to separate your hand from the exposed external antenna to preserve the best signal possible. It should also garner some laughs, too.