I made up the diaper bag pattern myself. The diaper and bib pattern came from here: http://beeinmybonnetco.blogspot.com/2012/01/new-outfit-for-dolly.html
I believe I played with the percent of full size settings in my printer to get just the right size to fit my granddaughters dolls.
For the wipes I simply cut a 6" square piece of flannel, and turned the edges over once and did a decorative stitch. However, later I seen to use the plastic travel soap dishes as a wipes case. These would be best done about and inch smaller to fit the boxes easier. I also cut a peanut shape out of 2 pieces of flannel and with right sides facing stitched the edges together. Be sure and leave a small opening on a striaght of way for turning. Clip the curves, turn, and press. Then top stitch clear around.
I think a small doll size sling would also be adorable. Here is a great tutorial I will be using if I get time to make them: http://www.pinterest.com/offsite/?token=486-205&url=http%3A%2F%2Fwww.oursevendwarfs.com%2F2011%2F07%2Fbaby-sling-tutorial.html&pin=131519251591473810