A classic from Scott Cunningham, sometimes, simplicity is definitely needed!
If possible, celebrate Beltane in a forest or near a living tree. If this is impossible, bring a small tree within the circle, preferably potted; it can be of any type.
Create a small token or charm in honor of the wedding of the Goddess and God to hang upon the tree. You can make several if you desire. These tokens can be bags filled with fragrant flowers, strings of beads, carvings, flower garlands - whatever your talents an imagination can conjure.
Arrange the altar, light the candles and censer, and cast the Circle.
Invoke the Goddess and God.
Stand before the altar and say, with wand upraised:
Mother goddess, Queen of the night and of the
Earth;
O Father God, King of the day and of the forest,
I celebrate Your union as nature rejoices in a riotous
blaze of color and life. Accept my gift, Mother Goddess
and Father god, in honor of Your union.
Place the tokens on the tree.
From Your mating shall spring fourth life anew;
a profusion of living creatures shall cover the lands,
and the winds will blow pure and sweet.
Ancient Ones, I celebrate with You!
Works of magic, if necessary, may follow.
Celebrate the Simple Feast.
The Circle is released.