Another well received way is to print a mini calendar page with a 3-hole punch so your friends can attach it to their own calendars. Of course, you would have to circle or decorate the day that belongs to you.
You may also consider doing customized printing on objects that will grab attention. For example, a pinwheel or a fan.
Some companies offer digital save the date cards as well. What this means is you have the card to use on your computer and you could send them out to any email address that you have. Since almost every household has a computer and an email address, this would be a good way to save money on postage stamps.
Brides tend to favor the idea of sending out save-the-date cookies, but make sure that you include an additional slip of paper so the information does not get eaten up with the cookies.
What To Include – When designing save the date cards, keep in mind that the only information that should be included are the date and the location. Travel and area information can also be included. This can be directions from the local airport, recommended resorts or hotels, useful phone numbers, and information on any group booking plans that have been made available. If you are using an online wedding planner, website, or some other online service, you may include that link as an additional courtesy to your guests. At the bottom, be sure to include the words.