With its weird reception troubles that seem to be triggered just by touching it, the iPhone 4 is like Cameron's dad's Ferrari in Ferris Bueller's Day Off: "It could get wrecked, stolen, scratched, breathed on wrong... a pigeon could shit on it! Who knows?"

The best solution so far seems to be Apple's Bumper case, a $30 strip of rubber that wraps around the steel antenna band and stops your clammy hands from sucking out the signal. But it's $30. Because of this, Oliver Nelson decided to make his own Bumper from one of those cheap rubber bracelets found pretty much everywhere, or by donating to a charity.

The case is as simple as it could be. Just find yourself a bracelet (look for one measuring "about 1.125-inches long and about 0.125-inches wide") and stretch it around the outside of the phone. Oliver also made a few cut-outs so he could reach the headphone jack, the dock connector and the mute-button. Done, and you just saved yourself around $29.

In fact, Oliver saved himself the full $30: his bracelet came free, bundled, somewhat ironically, with an iPad charger. Still, even if you pay full-price, its likely that the money will be going to a good cause, and not into Apple's pockets.

DIY: Ghetto iPhone 4 case from a 99c bracelet? [The iPhone Guru]

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