Reselling old cell phones

I still need gas money. Got any ideas on how to raise some? Here is one.

Did you know that CellForCash.com will buy certain models of cell phones, refurbish them and resell them as warrantee phones, pre-paid phones or emergency 911 phones provided to the elderly and victims of domestic abuse. If your phone isn't one that they will buy, you can get a free shipping label, put your phone in box and mail it to CellForCash.com for recycling.

Also, Greenphone.com cuts checks and offers you points toward gift certificates at retailers such as CircuitCity.com and Starbucks.

Now that's a good idea! Got any others?