Mando(main instrument), guitar, uke ( soprano and baritone) , banjo, fiddle, kazoo, mouth harp, and drum kit.
Was originally a drummer and when i went on the road i decided that id learn the smallest stringed instrument i could get and settled on the mando. I also decided on that because its kinda the "drum of bluegrass." Then years afterward i discovered that the baritone uke IS THE SHIT! Its slightly larger than a mando but it projects very well. Its basically a guitar at half the size and only the 4 bottom strings.
On a slightly related note, if anyone comes thru Portland, OR and wants to jam, busk, make-drunken-musical-asses-of-selves-while-receiving-money, then hit me up when you come thru.