Run an Honor/Memorial Gift Report, which is located in Reports > Tribute Reports. 

This report will give you a list of tributes that have gifts given to them (based on parameters defined in the report).  To get a list of tributes, choose the option to create an output query on the General tab.  If an output query is created, it will be a constituent output query of the actual tribute records (not a gift query of the gift records included in the report).