To add the tentacles, I used hot glue and put them on the back of the monster.
Step 1: Materials
2 pumpkin flashlights (probably could be replaced with a plastic ball or if you can only find one, it will work but you will need to use the side with the face)
A disposable ballpoint pen
A toy spider
A toy frog
A wire coat hanger
Clay or tentacles from a toy (optional)
A flat piece of rubber (optional)
Riveting tool (optional)
Hot glue gun
Pencil torch or lighter
Hacksaw (any saw that can cut plastic will do)
Drill and assorted drill bits
Step 2: Body
Take the two halves and glue them together along the wider side. This will form the body.
Then, take the toy frog and cut off the legs. The toy was surprisingly strong, and I ended up using tin snips. Attach the legs to the body with hot glue.
Optional- Get the tentacles that you got from a toy (or roll them out of clay) and Glue or rivet them onto the back of your monster.
Step 3: Head and Neck
To make the neck, take apart the pen until you are left with a plastic tube. Using the pliers, cut a piece of wire from the coat hanger about as long as your pen's body tube. Next, insert the wire into the pen and bend the pen to your liking, this will be the neck.
Hot glue the neck to the head and then attach it to the body where the pumpkin once screwed on to the battery case. I used a rivet to attach it but hot glue should work fine.
Step 4: Arms
Optional - To make the bulge, take your pencil torch and melt a small hole. Then take a small piece of rubber (I got mine from a dinosaur finger puppet). Then hot glue it to the hole that you melted.