I've put odd tiles on the fence and they get knocked off by possums (and possibly rats) walking along the rail. I keep putting the tiles back up and sometimes they crack, which is a shame.
I've only just noticed how many tiles are broken during the holidays - I've noticed a lot of things. Areas of the house that need to be tidied, weeds, dirty windows. It's back to school for the final term of the year, and I won't be noticing any of these things once I'm back in the running routine. No time to look around, no time to notice details.