Definitely encourage you to consider using ASL (American Sign Language) with your daughter - study after study has shown that kids who learn to sign have an easier time speaking, too.
Here are some benefits for toddlers ages 18-36 months (from www.happyhands.info):
* Helps parents decipher toddler's speech
* Allows you to communicate silently when appropriate (church, library, restaurants)
* Results in a spoken vocabulary that exceeds the general norm
* Gives children a positive way to interact with one another (eg. a child can sign STOP rather than hit or push another child)
* Allows children to communicate in 2-4 word signing sentences, before they are able to do so with spoken words
* Continues to bridge the gap between a child's ability to understand language and his ability to articulate it
* Builds positive self-esteem since signs are quickly learned and understood.
* Enhances sibling relationships due to earlier communication ability
* Enhances fine motor skills and coordination
* Helps young children identify and express their emotions
* Provides children with a fun way to release physical energy
* Gives children a headstart on early literacy skills
There are often local toddler sign language classes available, if you like a group experience and have the $$. There are also books and videos that you can likely check out of your local public library.
We used Signing Time ( http://signingtime.com/ ), which is an excellent DVD series for signing with kids. We *loved* it! I believe it may actually playing on some PBS stations now:
http://www.signingtime.com/pressroom/stationcarriage.htm
You may also be able borrow Signing Time from your local library - if yours doesn't have it available, just request that your branch purchase it.
We used Signing Time with our daughter (together we watched the series & learned the signs) and loved it. She is now 3.5 yrs old, and it was fun, easy, really helpful, and absolutely helped communication between us! She signed before she spoke, then used both the word and the sign together, and eventually used only the spoken word and dropped the sign. It was fantastic to watch and to know what she needed, was thinking, feeling.
We now have a 6 month old son and we're signing with him too. What's especially cool is that big sister remembers the signs, so as a family we can sign for basics like more, eat, drink, sleepy, hurt, love, please, thank you, and some objects like ball, bird, banana, dog, airplane, etc. (I haven't put my son in front of the videos yet because I'd like to avoid TV for a little longer since he's so little and we already can use some signs.)
Best of luck!