I can think of several cross stitch patterns that could be enlarged and used for a pillow design. Cartoon characters with simple line art like those pictured would probably be best. Winne the Pooh, Hello Kitty, etc.
This Kaleidscope themed mini cushion cross stitch kit includes: white aida fabric, ready-sorted DMC threads on card sorter, needle, backing fabric, b&w symbol chart and instructions (cushion filler not included).
Symbol of happiness: The second in Sheena Rogers' exciting seasonal series feature chrysanthemums and citrine! Find it on page 18 of our November 242 issue of Cross Stitch Collection: http://www.crossstitchcollection.com/find-us/