How many sheets/comforters??

We are prepping for when it’s time for our son (currently 16 months) to be in a twin bed (we have a convertible crib and an adventure seeker - we are just waiting until the day he tries to climb out of the crib!)

How many sets of sheets, and how many comforters, do you have for your toddler? We have not even been through potty training yet, so between that and vomiting I am assuming we need spares but are not sure how many!