Carrie at "Farming on Faith" posted a recipe for "Holiday Muffin Mix in a Jar" and they are yummy! I made them for our family to try them out (a few times)...the mix is now "home kitchen tested" and ready to be gifted to someone special!
Here is another link to inspire you with other "gifts in a jar" ideas. I have not tried any of these recipes yet...maybe you will discover a favourite there! I would just recommend that you do a "trial run" to make sure the recipe works before you give it as a gift. :)