Some sewing supplies are not necessary, but certainly come in handy. This is also a nice list to ask for your birthday or the Holidays.
Ergonomic Rotary Cutter
Large Cutting mat
Ultra transparant paper
Water soluable markers Blue and White
Wonder tape
Vario pliers
Pattern weights
Patterns weights are very easy to weight the pattern, so it doesn't shift, and you can easily cut around.
Colored eyelets and Jersey fasteners