Step 1- Acquire a sewing machine, a bunch of costume-making materials, a storage tank, 4 vacuum cleaners, a AI chip and 4 tentacle robot arms. Oh, and two googly eyes

Step 2- Attatch the googly eyes to the sewing machine

Step 3- Attatch the storage tank to the back of the machine

Step 4- Dump the costume-making materials into the storage tank

Step 5- Detach the vacuum cleaner's tube from the device. Repeat this until there are no vacuum cleaners left intact.

Step 6- Attatch the tentacle arms to the device

Step 7- Attatch the tubes to the tentacle arms

Step 8- Insert the AI chip into the machine

Step 9- Program it to construct costumes

Step 10- Your costume robot is complete

Now class, get to constructing your costume robots, and Happy Halloween!