I like to play old pop songs from the twenties and thirties with our jug band: Boodle-Am-Shake, Sweet Sue, Five Foot Two/Please Don't Talk About Me, Somebody Stole My Gal, I'm Satisfied With My Gal, Walkin' My Baby Back Home, Lindberg Hop. . .
Some bluesy tunes like They're Red Hot and St. James Infirmary work well too.