Here's a quick and easy little project for anyone with an embroidery machine. These dandy little travel mugs can be found at your local Dollar Tree. Yup! You can buy one of these babies for only a buck! Super easy and super cute and super cheap (especially if you use fabric scraps you already have on hand).
Using the paper insert that comes with the mug as a template, cut out a stiff heavyweight piece of interfacing to use as a guide and a pattern for future mugs.
Cut the fabric you want to use as the insert about ¼ inch from the edge of the template.
Fold the edges of the fabric over the template and press.
Remove the template and edge stitch all the way around.
Hoop up the fabric and some stabilizer then embroider. Press flat.
Insert the fabric and Voila! Personalized mugs!
(Remember to remove inserts before washing the mugs.)