Place cardboard box on a hard surface and add miscellaneous objects to top of the box to create the look of a proton pack. Put the medium circular tin at the bottom of the box, the small cardboard box at the top and the plastic objects to the left of the box. Glue the objects onto the large box.
Cut off the tops of two of the soda bottles. Attach them together using glue to create a plastic tube. Glue the pudding container on the end of the bottles and the race car trigger underneath the bottles.
Glue the vacuum hose to the base of the circular tin on top of the box. Attach the blaster prop to the opposite end of the hose.
Make sure everything is glued securely in place. Attach two straps to the back of the large box to make the proton pack a backpack. Move the proton pack into well-ventilated space and paint it black using two coats of spray paint. Allow to dry.
Use florescent pens and stickers to add detail to the pack. Color a red triangle and stick to the front of your pack and label it high voltage. Glue loose wires to the top of the pack. Add duct tape to create reflective elements on the proton pack.