Step 1: What you need.
A DOT push light
a red leather glove
a velcro strap
and a sharpie
if you are going for more detail pick up or find some sink and plumbing parts and some copper wiring.
Step 2: Putting it together (simple)
all you need it to put some velcro on the back of the light and get the strap around your body and put it under your shirt.
as for the glove cut a whole in the palm and do some lines with the sharpie and BAM your ready to go
Step 3: Putting it together (detail)
take the front plate off the DOT light and glue on some shiny sink parts and some copper wire.
the arrangement of it is ultimately up to you. however use reference pics and do your best to recreate what is shown in the movies.