What is the craziest thing you did to save money, big or small amount?

At college I walked to the nearest train station to pick up half smoked cigarette butts when I couldnt afford a pack of cigs (~10 km). At the end of the month usually. Me & my then boyfriend waited until like 2 am then walked the city to go through clothes & house items left besides the dumpsters. This was before covid and all that