Awesome tool! This website allows you to enter your starting and ending destination and car make/model/year to calculate how much a trip will cost you in gas (calculating for regional gas price differences). Ingenious!
Debt Snowball Calculator by Vertex42 - you can see the light at the end of the tunnel on as little as say 35 bucks a month extra paid against your debt, then you snowball that - you can get out of debt using this tool, your gumption and will. (http://www.vertex42.com/Calculators/debt-reduction-calculator.html)