Number one: Save on communication! Use roaming-like services without paying exaggerated roaming bills. (Those who read my previous posts already know that I'm using CallinEurope service and I'm very content with it)
Number two: Hitch-hike! Public transportation is too expensive and sometimes inconvenient! That will also give you possibility to meet a lot of new and nice people!
Number three: Shake down for the night in wayside inns or camping! Much cheaper but still with good conditions!
Number four: Prepare you meals by yourself! It's easy-you find anything in a supermarket without paying more for only the fact that you have been served by someone else! You also know the way your food was prepared cause you did it yourself 
And finally number five: Fantasy, improvise, take everything easier and trust people. I assured myself that there are much more good guys than bad ones!
And it's inessential – will you follow my tips or not – but you must have a good vacation cause you simply deserve it !