A little soldering is all it takes to make this cool little emergency cell phone charger. Keep it in the glove box of your car, in case you ever get stranded in the woods and start to hear banjo music!
You might be able to find the mini solar panels at a store that sells science or electronics equipment; otherwise you can order them online. Please note, you'll also be cutting the wire on the cell phone charger, so make sure it's not the only one you have! You can often find cheap chargers at discount stores like Big Lots -- it doesn't matter if it's AC or car compatible, since you'll only be using the end that plugs in your phone.
1 Altoids Tin case
2 Mini Solar Panels (3V 20mA each)
1 Solder (3")
1 Small Heat Shrink Tubing (4")
1 Large Heat Shrink Tubing (4")
1 Double Sided Tape (3")
1 Solder Iron
1 Heat Gun
1 Wire Stripper
1 cell phone charger