Go to cool text.com
Choose a text style, there is no wrong answer here, choose whatever suits your fancy.
I chose the Shrek looking style. Add the text you want where it says design your own logo - be brief.
After entering the text you desire, press the render button.
Now you can copy the rendered graphic and paste it where you need it, or download it in a graphic format.
On the iPad you can save it to the pictures folder choosing to e-Mail it. Select the image shown to mail and save it.