Buy some Goop for gluing. You will need at least two tubes. More if you decide to make meat knickers, less if you're opting for meat hot pants...you get the picture. For sewing, buy some embroidery thread or string in a color you like. We used two different colors for some contrast.
Pick up a large needle also - an upholstery needle worked well. A thimble would also be handy, but not entirely necessary. Take note of subtle product placement.