We are going to turn this into a wand is to remove the head of the hammer, and replace it with a glowing piece of frosted glass. First you will need to take the hammer apart and see what you have to work with. Once open start to lay out the components and figure out where all the electronics and wires will go such as the layout below.
Once you have your parts laid out next to the shell, you'll discover that there are are support plastic and guides that have to be removed. I find that a combination of snips and using a rotary tool makes fast work removing them. Sanding and an xacto blade flow up to clean up any rough edges.