Many people have a hard time trying to find their child a costume for Halloween, because it's too expensive. Here is a costume that is eco-friendly and can be made at home as a family project. This instructable was made for my high school project, which was to "go green" by creating a marine themed costume made out of cardboard. Our group chose a reef animals theme, which included a clownfish, jellyfish, seahorse, turtle, and a manta ray. This costume is creative and still saves you money.
Design and build a marine themed costume made solely out of cardboard without any adhesives. It also had to be made using slotted construction for easy flat pack storage. The costume is intended to fit middle school students (ages 10-13) either for Halloween or a staged show.
-Safe for age range
-10-13 year olds are target audience
- No tape, glue, or any other adhesive
-Able to be worn as stage costume or for Halloween
Materials: QTY Size
(S1) Cardboard 4 8-6"x4"
32"-4"on top, thinner on bottom cardboard
45"across-thin on outside, thicker on inside cardboard
(T1)Cutting mat Padding to put underneath cardboard when cutting
(T2)Utility knife Used to cut thicker cardboard
(T3)Ruler Used to measure different parts of the costume
(T3) Pencil Used to draw out all parts of costume onto cardboard before cutting
(T4) Circle template/compass Used to draw rounded or circular shape
(T5) Scissors Used to cut pieces of cardboard that are thinner and has a round shape
(P1) Eyes 2
(P2) Strap 1
(P3) Tail 1
(P4) Body 1
Step 1: Part 1:Eyes-Measuring and Cutting Slots
1. Measure(T3) and draw(T4) 8 pieces of carboard(S1) that are 4"x6 1.
2. Cut out parts with a utility knife(T2) over a cutting mat(T1)2.
3. Cut slots(T2) 1" in each side of all 8 pieces
Step 2: Part 1:Eyes-Slotting Together
2. Cut(T2) 1" slots on one opposite side of each box
*Note: If you have extra strips of cardboard sticking out, trim it off with scissors(T6)
Step 3: Part 2:Strap-Measuring, Cutting and Folding
2. Cut out part with utility knife(T2) over a cutting mat(T1)3.
3. Fold 3" on each side
* Note: This measurement is just an average measure so you can adjust it if you need to
Step 4: Part 3:Tail-Measuring
Step 5: Part 3:Tail-Cutting
3. Measure(T3) 1" down, then drawing(T4) a square that's 1 1/2" on both sides of the tail
4. Cut out(T2) the 1 1/2" squares
Step 6: Part 4:Body-Measuring
1. Measure(T3) and draw(T4) a piece of cardboard(S1) that's 45" across, growing thin on the outside to thicker on the inside.
Note: the middle(tallest point) should be 19"
2. Cut out part with utility knife(T2) over a cutting mat(T1)
Step 7: Part 4:Body-Cutting Slots
2. Cut(T2) 2 slots that are 3" from the left of middle and are 4" apart and 1" deep over a cutting mat(T1)
3. Repeat step 2 on the right side
Step 8: Part 4:Body-Cutting Slots Cont.
2. Repeat on the right side
Step 9: Assembly Part 1
2. You can fold the top of the tail(P3) into the body (P4) to make it stay
Step 10: Assembly Part 2
Step 11: Assembly Part 3
2. Bend the strap(P2) into the body so it stays