We picked up some ginger beer the other day so I decided to make that my focus. There were also some great prices on lemons which I normally don't have in the house.
From the BarOneDrinks site is a drink called "A furlong Too Late". That is one long name for a drink.
2 oz white rum
4 oz ginger beer
twist of lemon
These were so good that I had to have more than one. Not too sweet and yet not too sour.
I also had a whisky sour but that recipe has been around forever.
One other interesting drink that my wife made used Mango Rum and grape juice. I don't have the proportions but I can only assume it was 2 parts mango and 4 parts grape juice. It tasted like a grape popsicle. Too sweet for my tastes but she loved it.