Plans for this weekend or tonight? How about you give a Margarita-midnight-party?
1 part lime juice (In Austria the best is Limettensaft from DM(Alnatura))
1 part Cointreau
2 parts gold tequila
Lime juice and coarse salt for the glass rim
Pour a bit of lime juice in a deep plate and spread salt on a second plate. Dip rim of glass in lime juice and then in salt. Let dry. Mix everything together and serve with lots of ice.