Bar/drink Menu Ideas

I second this! also if you hit up a walmart/superstore near you you can get the really easy premade drink mixes, they're not that expensive, and usually only require one liquor to complete them. They have a few variaties, they're usually located in the same section as your non alcoholic beers and wines, near the pop.

I'd definitely add simple syrup to your bar - it really extends the options for simple cocktails. It can be made really, really easily at home a day or two in advance (it's literally just sugar and water boiled down to a syrupy consistency). I'd probably also add maraschino cherries to garnishes. For mix, I'd add orange juice, possibly pineapple juice, and ginger ale.

For a few recipes that are super simple:

Rum punch: Rum and equal parts orange and pineapple juice

Rum Spritz: Rum, club soda, lime wedge

Whiskey sour: Whiskey, lemon juice, simple syrup

Seven & Seven: Whiskey (Typically Seagram's 7, but...) and 7 up/sprite