You know what's fun? Plugging in the wrong charger the night before, and now discovering that your cell phone is teetering on the brink of shutdown while you're waiting for that all-important, deal-making phone call and hoping that your best pal isn't going to use up your battery's last gasp by calling to talk about an interesting pizza stain on his dash while he's stuck in traffic.
Of course, by "fun" I meant "tooth-grindingly aggravating." (And, I should point out, the above example bears only a passing resemblance to real events.) If you occasionally find yourself in a similar situation, you might want to consider picking up the Cellboost, a US$7.99 portable battery that can give your phone an extra hour of talk time. Different models exist for various Motorola, Samsung, LG, Nokia, Siemens, Sony Ericsson, Sanyo and Audiovox phones, but they all work on the same principle: pop the Cellboost in when you need it, and when it finally gives out, simply discard it drop it off somewhere that recycles old batteries. (Demerits to Cellboost for suggesting the environmentally unfriendly alternative.)