Idea - wedding favors also serve as the seating chart and guests' drinking glasses for the night. use chalkboard paint and write guests' names on their glasses. add striped paper straws with flags that indicated their table numbers.
Save the date & party favors -- with tins filled with margarita salt, customized labels & "her favorite" and "his favorite" margarita recipe cards. Salt can be pure white - or can be color matched to coordinate with event theme.