Couching is simply sewing a heavy thread in place with a finer thread. Its a retro technique, too, that was originally done by hand, but it works beautifully by machine as well. I use a zigzag stitch to secure the heavy thread in place.
Use old jeans, cut into squares, add some batting material to the center, sew edges together. Either sew or draw the "X" and "O" onto them and instant tic tac toe game for kids! - Cool to do with beanbags too.
How to sew stylish and sturdy travel bags and organisers. Includes a cosmetics/toiletries roll, and a small suitcase with removable zippered inserts. Sewing patterns and full step by step video tuto (Travel Gadgets Bags)