Last year I made this easy, no sew Valentine mail bag with my kids. It was a hit! In fact, they played with it long after the holiday. it will only take a few minutes to whip up one of these bags.
You will need the following sizes of felt in the same color; 12 x 9, 8 x 9 and 2 x 24. You will also need a pink or red felt heart, a hot glue gun and fabric paint.
You can cut your heart free hand or use a pattern.
First lay down the 12 x 9 sheet of felt and then lay the 8 x 9 sheet on top, matching up the bottom edges (as shown below. With the hot glue gun, glue the bottom edges and side edges together.
Now take your felt heart and center it along the bottom half of the flap as shown below. Using the hot glue gun glue the top half of the heart to the bottom part of the flap. Make sure you don't glue the bottom of the heart or you won't be able to get into your bag.
As you can see, my sassy little Sadie loves this bag!