i roll search pennies and nickels. i keep all 53 and earlier nickels. i keep all wheat pennies, all s pennies, look for wam and cam. i don't check for rotated dies on either coin. is it worth the time? are there some rotated dies out there with some value? and if so, what dates should i look for. also, anything else i should be looking for......that does not need a microscope to see, for either coin type.
FYI, there are Over Mint Mark varieties for 1954-S & 1955-D nickels. I've personally found a dozen or so of those, so don't pass them up and they are a great resale piece for funding your hobby.