I have available for purchase an accessory to bring your Generations Brainstorm, Fansproject Smartrobin, 87 Headmaster Brainstorm, or any other future Brainstorm figure official or not down the pipeline.
For the last little while I've been hand crafting two different versions of an IDW Inspired briefcase for the above mentioned figures. The first version I call the Generations Model and is designed to fit in the open hand on the Generations Brainstorm. The second version is the 5mm variant, designed to fit inside a closed fist, like those found on the 87 Brainstorm or Smartrobin.
Each version comes fully assembled and painted and include the rubber shackle that can easily slip around the wrists of any figure. The 5mm variant's handle is split and on a pivot point allowing you to position the handle into the fist and swinging close in order to give the appearance of a complete handle when held buy a figure.
I have attached some photos of fellow collectors showing off the case I've made to date as well the following video will show you a review from Dinobot Maximize on the Generations model.
https://www.youtube.com/watch?v=lqIK8rEZkPk
Every briefcase is hand crafted, assembled and painted and ready to place in the hand of your figure. The case itself does not open so there would be no worry of a time travel mishap, suns going out or contain a 1%er spark but is a great addition to any member of the Lost Light, that is if Brainstorm lets them out of his sight.
The Generations model is $25USD and the includes shipping. The 5mm variant is $30USD and that includes shipping. If you have any questions, please feel free to contact me.