shaker is needed.
add leds to the chest of the toys. cheap leds for war machine and whiplash can be found at radioshack. frosted flat top led from pinballlife fits perfect in the iron monger. do them yourself and just connect them to the GIs. These are $10 toys with a $3 led. No way would I pay $100 for them as some people sell them for.
I also make custom EL wire whips for mine.

No tutorial. Made it up as I went. Used the EL wire and bound it to a copper wire found at a craft store to make it look like the whips in the movie.
Got this kit here. Just order both colors the same. I used blue. Hook it up using a 12V adapter and just cut the ends off and hook it directly to this.
http://www.glowire.com/products/12-Volt-10%27-Plug-%26-Play.html

Used shrink tubing to cover EL wire out the back of the figure so it didn't look retarded.