A bag holder (650) for holding a t-shirt bag (651) includes a holder frame (652) and a holder handle (654) that is secured to the holder frame (652). The holder frame (652) selectively holds the t-shirt bag (651) and including a first handle restraint (658) that restrains a first bag handle (651B) of the t-shirt bag (651), and a second handle restraint (660) that restrains a second bag handle (651D) of the t-shirt bag (651). The holder handle (654) is movable relative to the holder frame (652) between a carrying position (678) in which the holder handle (654) is used for carrying the holder frame (652) and the t-shirt bag (651), and an attachment position (680) in which that holder handle (654) is used for hanging the holder frame (652) and the t-shirt bag (651) near a vertical surface (676). With this design, the bag holder (650) can easily be carried and moved by hand, and the bag holder (650) can be easily secured to a door (686). Further, the holder frame (652) can include a frame base region (664) that is adapted to engage a horizontal surface (672) to hold the bag support region (656) and the bag opening (651A) above the horizontal surface (672). With this design, the bag holder (650) can easily be placed on the horizontal surface (672) such as a countertop, or the bag holder (650) can be hung on the door (686).