Don't drink out of plastic to avoid BPA. Even the smallest amount of BPA has been linked to infertility, birth defects and other reproductive issues when tested on lab mice. BPA has also been linked to asthma and other illnesses and diseases in humans.
Thin chains, preferably made in various colors, can be mixed and create an elegant composition with this accessories. Combined with dress and shirts and bring a more feminine and delicate effect to the look.