Creating communications for children can be lots of fun, especially with the fun typefaces you can use.
This PDF gives you some guidelines to make your use of them more effective. Though it has some useful tips, the companies cited are no longer in business, but http://www.fontspace.com/ is and below are some of their current fonts that are great for children:
All the fonts above are from: http://www.fontspace.com/ and are free downloads.
Google fonts also has a great selection of free fonts
One very important guideline to keep in mind is to NEVER use the typefaces that have reversed letters (such as a reversed "e" or "s"). It might seem like that would be a harmless, cute thing to do, but when little children receive a printed piece from a respected person in the church and the penmanship is all wrong, it can be confusing.
Have fun, do kid-friendly things, but always remember the position of authority and influence you have in young lives.
To download the PDF, click here or on the image.