What are your most unexpected or weirdest expenses?

[Sean Tracey]

I've seen quite a few lists of expenses when people discuss analyzing a rental property e.g. vacancy, repairs, maintenance. Those seem to usually entail your basic upkeep for a property i.e. clogged toilets, landscaping, snow removal etc. That got me thinking about expenses that may be totally unexpected and unique to one's particular area. Do any of you have things that became a regular expense that you would never have imagined?