"Because some stupid person decided to steal the radio and navigation out of my car, I made a cell phone holder out of a pizza box."
Ha! Checkmate, thieves! Now it sucks too much for you to steal!
I'll bet it's still not as durable as a peanut phone, though.
"Please hang up, connect the red wire to the yellow wire, no the other yellow wire, strip the white wire and force it into the audio-out socket, and try again."
"I have a good cellphone with all these neat features, but I couldn't find a cheap bike mount for it, so I decided to build one of my own! I've just used cardboard, a lot of black extra strong gaffer tape, about ½ meter (~1' 8") of velcro and a piece of sponge that sits on the back, between the handlebar and the bike mount as a shock absorber."