I was planning on posting this earlier but we are working on making some decisions on our baby daughter who has hearing issues this week and what steps we were going to take. So please accept my apology as know I promised some people to update earlier than this and I just haven't gotten to it until now.
Loopeez. It is a shoe tying aid for kids that is actually fairly cheap being only $4.00 for a pair. Basically, after you cross the laces and put one lace under the other and pull. You stuff the laces (one lace up each side) to make loops. The loopeez holds the lace(s) depending on if you're doing one or two loops in place while you finish the rest of the knot. There are videos of how to use this on their site.
I made one out of a plastic lid from a sour cream container and used a hole punch. The only problem I can see with this model personally is that there is no point in doing the first part of the knot before you make bunny ears. Once the bunny ears are made with this help aid the problem is that the bunny ears will not stay tied unless you make a double knot. Other than that it works well.