Got mine covered in unique patterns of road salt and slush from yesterday's snow storm -- does that count?
Seriously, nothing today, but I am extremely grateful to have the Tesla all-weather mats once this winter weather sets in. No longer very pretty after 4 years, but they still catch most of the salt and moisture from my wet shoes or boots and protect the carpet. (I use nicer mats from Cocomats.com in the warm weather.) The mats and several other accessories (coat hooks, cubby drawers, center console, etc.) are probably not what you were looking for because they are covered in other threads.