Mad Hatter Tea Party For A 9 Year Old

hi im helping my little sister plan her alice in wonderland mad hatter tea party so far i have: -giant cookies that say "eat me" in different shapes -china tea cups for them to decorate -clock cake -invitations -decorations my little sister doesn't like tea or lemonade is their any other substitute? also what should their meal be for lunch? any other suggestions and comments would be helpful thanks :]