glass is the preferred container for storage, but its not as convenient as plastic. so i buy and store top shelf
e-liquids in glass bottles, then when im ready to use it transfer it from glass to 10mL LDPE bottles. you can find 10mL LDPE with dropper tip child resistance cap for about 50 cents each. then i throw on handwritten label with brand, flavor and strength. i have some e-liquids that are more than 2 years old, some have lost a lot of flavor but others are really something special.