Well I have a bit of a different spin to this topic, I have had my roofless casita for over 6 years now, I bury most of my valuable tools ,but one year I tarped over the roof, and left my strimmer inside only to come back several months later to find the  tarpe had been ripped of by the winds, and no strimmer !
The farmer below me with the help of "sign language"  let me know that the owner of the finca above me had taken the strimmer inside his locked up shed, safe from the "Bandits" well it took me 3 years but I managed to get it back from him last year,I can only thank the locals around the campo,who always give a wave, and even though I cannot speak Spanish they will try to communicate. :D