This whole activity could be done outdoors and you can allow creation to speak for itself. But of you are to be indoors take advantage of that situation to provide an even wider experience of creation.
a) Have people sit on the floor. If they are uncomfortable with that have them sit on chairs with an aisle in the middle.
b.) Have animal sounds recorded (either from a sounds effect tape, or bird sounds from the Ontario Science Centre, or your own back yard).
c.) You can decorate the walls with clippings from National Geographic, maps, animal pictures, models or whatever would help people focus on the splendor of creation.
d.) Instruct the people to sit in silence for the first three minutes.
e.) Have one of the members read a creation psalm to end the silence.
f.) Lead a number of songs that exalt God as the creator: “I Can’t wait to Get to Heaven”, “Fairest Lord Jesus”, “I Sing the Mighty Power of God” and others from the first sections of many hymn books. (You may also choose to read out one of the hymns in unison.)
g.) Arrange a slide presentation of breathtaking scenes of natural beauty. You cam have an instrumental solo or play an instrumental praise tape (It might be useful to get the whole set of “Praise 1-8″?). If you can’t get slides you may be able to get a film from the public library free of charge. You can turn the sound off to help the people concentrate on the Lord. (You may also want to take up the offering at this point)
h.) Expression of Praise. Lead a few choruses then lead the people into vocally expressing their wonder and awe in God’s creation. Coach the people in how to offer up original praises that come from the heart, and not just standard praise words” — hallelujah etc.
i.) Ask for two or three people to lead out in prayer for the needs of the church, individuals and the world.