Self-watering devices or inserts for watering plants and flowers, namely a self-contained water displacement device for use in planters, raised beds, and gardens; Watering devices or inserts for self-watering plants and flowers, a self-contained water displacement device for use in planters, raised beds, and gardens; Watering devices or inserts for watering plants and flowers, namely, a self-contained water displacement device for use in planters, raised beds, and gardens