There is an old catholic tradition of building and maintaining a "May altar" dedicated to Our Lady throughout the month of May. The photographs of these May Altars come from the home of my brother, Fr. Robert-James, OPC. The following excerpt comes from the webpages of The Marian Library/The International Marian Research Institute in Dayton, OH.
To the specific characteristics of the May devotion is to be counted the specially set up May altar - be it as an addition to or specially decorated altar in the church or as a "house altar" in the family circle. Like the May devotions themselves, the custom to highlight this type of May altar stems from southern European countries. A report from France in 1842 speaks of Our Lady's altar in May showing off in rich splendor, while the families also erected and decorated small home altars.
All of nature awakened to new life in springtime is presented to honor Mary, who is herself "a rose of Sharon, a lily of the valleys" (Song of Songs 2,1). This form of devotion was influence and furthered, for example, in Treatise on True Devotion to Mary by Louis de Montfort, who, among other things, counted the decoration of Marian altars a chief exercise of Marian devotion.The development of "home altars" seems to have naturally grown from churches specially dedicating altars within the worship space to Our Lady. The above citation continues:
When erecting a May altar in a church, one distinguishes between the special decoration of an existing Marian altar, the erection of an altar set up specifically to serve this May devotion, or the transformation of the main altar into a May altar. The Handbook of Church Rituals (Regensburg 1846) notes under May altar that these devotions be held at an altar dedicated to the Blessed Virgin and decorated "to the full." If there isn't any [altar dedicated to Mary], another altar is to be set up and furnished with a picture or a statue of Mary. In Strasbourg, in 1855 for the first time, a special "Mother of God altar" was set up before the chancel.
With the development of May altars in churches, the custom spread to set up this type of "altar" also in the home. The authors of both private publications and of official publications refer to this practice, encourage them, or assume that there are such. While some devotional books encourage the user to decorate an image of Mary found there and to pray there--a custom "that belongs anyway in every good Catholic home"--others depict the "prayer room" as "a shrine dedicated to Mary."
A side altar of this type was drawn into the celebration in that the blessing frequently was given from this altar. By carrying the Blessed Sacrament from the main altar, the precedence of the main altar was clearly visible.Pick some flowers, find an icon or statue, and light a candle. Place Mary as the "spiritual fireplace" of your home this month. Our Lady of Walsingham, pray for us all!
