Based off screen images this is my attempt at modeling Boba Fetts Jet Pack.
Check out my other designs where I modeled the top Rocket and side canister Tops.
The center rocket is made out of a 3" (3.25OD) PVC tube with a single rotary cut down one side so that it is easy to slide in the center portion.
The side canister use a 2" PVC pipe and the caps and rocket can be found in the link below.
One the back there are cut outs for you link all the sections together using 1/2"x1/8"x36" aluminum bar for structure.
The thruster filed are available here