It helps to have a wig head to hold the wig while you're working with it. Use sewing pins to hold it in place on the styrofoam head.

Unbraid the wig, keeping the three sections separate. This wig loves to get tangled up, so have a brush and some scissors handy, as well as a good helping of patience, to manage the tangles. 

Costumes, especially kid's costumes, are prone to a lot of wiggling and tugging. The solder joints are not strong enough to withstand this kind of use. Strain relief is key for this kind of project to make it last. 

I used a twist-tie through the unused holes on my CircuitPlayground to guarantee that any tugging will not be transferred to the delicate solder joints. 

Don't use bare wire here -- the unused pads can still short out your board if they're connected by metal. 

Glue a couple hair clips to the back of the Circuit Playground with E6000 or another very strong glue. Hot glue will probably not do the trick here, at least not for longer term use.

Another option is to put your Circuit Playground inside one of the Adafruit handy snap-fit cases. This will protect it from a lot of wear and tear. 

Once the glue is dry, decorate the front of your Circuit Playground with a silk flower. This will diffuse the lights on the board beautifully. Use a needle and some strong thread to sew the lower petals to the board through the soldering holes. This works better than glue, since it won't damage or clog the sensors and buttons on the face of the board.

I also glued a jewel into the center of my flower.

Clip the flower securely into the wig at one of the temples. Cut a small hole in the wig's mesh lining just behind the flower and pull the light strands through to the inside. Weave them in and out of the cap a few times around the side of the head, so that they eventually emerge at the start of the braid. The idea here is to minimize any loose wires that may get caught on things as the wig is pulled on and off.

Place one strand in each of the three braid sections. Twist the sections to keep them separate and as tidy as possible, and to hide the lights inside. The hair works beautifully as a diffuser.

Place the wig on your wig head and pin it securely, or ask someone to wear it and hold it in place. It's much easier to get the braid in the right place and looking tidy if you do it while the wig is being worn.

Braid the hair tightly and secure with a rubber band. Trim off any extra lights that are sticking out the end of the braid -- I ended up trimming 1-2 lights off of each of my strands. Seal the ends with heat shrink to protect against dirt or moisture getting in.

Cut a slit in the wig cap behind the ear that's the right size for the clip on the battery case. Use some glue or thread or zip ties to secure the battery case so it doesn't fall out, making sure you still have the abilitiy to change the batteries as needed.