Lovely concept. I'm thinking of making a gift package of this game with a set of interesting empty jars and bottles, a collection of solar powered fairy light lids and stoppers, and miscellaneous bits and bobs (e.g. beads, small silk flowers, buttons, charms, found objects). The player would be able to create jars to represent some of the spirits they are cataloguing, and line them up on a windowsill. At night they will glow for a few hours. I would include a printed version and a journal with an interesting (possibly hand-made) cover. I have a niece in mind for this gift. I could write up more extensive directions on how to make a kit and how it would relate to the game rules if there is interest.