If you are manually inserting coils, then these pliers are invaluable, as crimping the end of the coil ensures that the coil stays put.
Plastic Binding Coils - Pack of 100
Plastic Binding Combs
Slide Binders - Squareback A4
CLEARANCE - A4 Plastic Binding Coils - Pack of 100
CLEARANCE - Velobind/Surebind Strips - Pack of 100