Replacing vanilla wafers in rum balls I have a coworker with a dairy/whey sensitivity, yet I love making rum balls around this time of year and plan on bringing a batch to work.

Are there any close substitutions I can use in place of wafer crumbs that will stay fairly true to the original recipe?
Graham crackers should work well for you. I have used graham crackers and vanilla wafers interchangeably for several recipes. There are rum ball recipes that list several different crushed cookie options (using the same volume of each.)