This is a variation on a crayon roll. It is really so easy to make and can be customized to however many pencils you want to add.
The size of the fabric I cut for this one was 8" X 12.5" for the backing, interior, and pocket (folded in half). I have plans to make one for my older son as well and I will put together a little tutorial for that one when I get to it.
Here is simple way to decorate a Lego cake
Jack had a little play date Birthday party afters chool. A few of his school friends came over and they all played Lego together. He wanted a pudding pie instead of a cake so he helped me decorate the top with Duplo Lego and Lego guys.