Rose Flowers

A love rose consists of a glass tube with a paper or plastic rose inside of it, and a bit of cork or foil on the ends to keep the rose from falling out. While ostensibly intended as romantic gifts, their primary known use is as a crack pipe by users of crack cocaine.^[1] They are commonly sold at convenience stores, particularly in inner-city locations.^[2]
Crack cocaine users remove the cork or foil from the ends, discard the rose, and put a small piece of copper scouring pad or similar metallic material into the end to act as a "filter". The pipes are not durable, and must be replaced often.
Hash oil is also smoked using glass tubes like this, placing the oil inside the glass then heating the outside until the oil begins vaporizing, then inhailing the vapor in through the tube as it vaporizes.