We were renting a townhouse that got foreclosed on. As soon as we got a letter from the new owner (a bank) we quit sending the property manager rent checks. Set it aside in savings, just in case, but we saved about 5 grand and never heard a word about it. Then got paid $2,500 to move across the street. Hired movers for all the furniture. Yeah, that was a pretty sweet spring. (pretty sure that property manager just stole that $3,000 we had sent them while it was all in limbo but meh)
Years ago, I got free rent in exchange for picking up trash and cleaning the complex pool. Because I had been appointed pool king, it meant I got to throw a padlock on the gate promptly at dark and ended all those damn midnight "WOOOOOO!" parties. The kids all hated me, those with jobs loved me. Same deal there, too. Changed property management companies, free rent deal evaporated, but we were in limbo for another 2-3 months before they figured it all out and started charging us again. Socked away about $4,000 on that deal.