365 Jars is the work of Bristol artist Kirsty Hall. Every day this year she will leave an "art jar" in Bristol for the public to find. Some jars have little sketches, others contain altered photographs, and still others have small informal sculptural items, like a rose made of torn brown paper.
Hall updates her blog each day with a picture of that day's art jar, both a close-up descriptive picture, and a picture of the jar in situ.
Each of her jars has a label on the lid pointing finders to her website. If you find a jar you can go to her site and fill out a form describing which art jar it was, where you found it, and any other comments. Hall posts the information on her blog, and seeing the public's comments is half the fun.