Jenny Garland Nap Mat Tutorial...You can order the foam from Walmart.com and it is enough for 2 mats. I also found it was easier to have the bottom velcro instead of down the one side. My boys LOVE their nap mats though!
Pins I have actually made
Another great nap mat tutorial. Flannel seems like a better choice- cozy but not too hot.
The Kids Will LOVE This
Dimplicity - Crafty Blog: Nap Mat with Applique Name Tutorial
How to #sew your own nap mat // Full tutorial
My Handmade Home
SImple Nap Mat Kindermat Cover Tutorial with Strap
Nap Mat - removable pillow and wider blanket
Need to make a nap mat- and this is a cute one. Seems a little hot though.
Owl Nap Mat Cover with Pillow and Blanket by SarahSunshineDesigns, $60.00
Sarah Sunshine Designs
Amy Gabbard: Nap Mat Pattern -- Kindermat Cover Pattern