I used this tutorial's measurements and basic design and this tutorial's method of using squares and rectangles rather than just squares. Less seams to sew equals a very good thing.
I even had it ready two days early. Which was good, because then I had time to help Anna and Ellery with their presents- a matching pillow and blanket for Sam's stuffed monkey. They designed and stuffed. I sewed.
I think we're starting a good tradition of handmade gifts. They were so proud of these. Much prouder than they would have been of just going to the store and picking out a toy.