The Waste-o-meter is an Android application to compute the cost of waiting for your computer, and what material you could buy with this lost money.
It is available on the Android Market : https://play.google.com/store/apps/details?id=info.piwai.timeismoney
It should work and look identical on all Android versions, from 2.2 to 4.1. Please report any problem in the issues.
Help is greatly appreciated! Have a look at
res/values/materials.xml, I'm sure you can find improvements there. You can also provide translations!
The idea comes from an interesting article by Olivier Croisier.