After our hideously expensive electricity bill the last time I almost fell off the sofa. I had never before paid so much. I decided to test out using the timer on our washing machine so it starts after midnight when electricity is almost half price and voilà, just got our next bill and we've saved about 14€ in 6 weeks. That's by just using the washing machine between midnight and 8am.
If your washing machine has a timer, try it out!
NB, not advised if you live in an apartment where you risk to wake up the neighbours by the vibrations! hehe