These small Precision springs will work great on scale models as O2 hoses, wire looms, etc. They come in sizes from 1.0mm (0.039") up to 3.4mm (0.13"). Each package comes with 2 pieces each 20 cm (7.87") long.
Seat belts from HGW Models are laser-cut so it is easy-to-use product. Set contains micro fabric belts and photo etched buckles suitable for large scale planes in 1/32 scale.