1) Two Peas in A Pod. Now this one is my all time favorite. You can put your own little twist to this baby shower theme. With this theme, you can either use two little babies in a pod or you can go with two peas in a pod. Let your imagination run wild and have fun while you thinking and brainstorming. This is a rather popular theme, so you should not have any problems finding baby shower favors to coordinate with your decorations.
2) The Noah's Ark. This is a rather simple baby shower theme for twins as well. With this one you can use props like a rainbow, stuffed animals. You can give these stuffed animals to the new mom for the babies when they come home. No need to worry about finding any decorations for this one because its a very popular baby shower theme for twins. Have fun and let your creative side go to work.
I really hope this helps you with planning your twin baby shower. What is your favorite twin baby shower twin? I would love to hear from you!