Step 1: Materials and Prep
- Small to medium-sized throw blanket or scrap of fleecy material.
- Contrasting fabric scraps for eyes.
- A 2-3 ft zipper.
Layout to Cut:
- Fold the blanket in half the long way and decide how long you want the sleeping bag to be without the hood. If the child is sleeping in the bag this length should make it so the bag goes all the way up to the neck, or long if you want to leave extra room to grow into.
- Fold again where you want the top edge of the sleeping bag main body to be and cut the folded top off. This top part will form both the hood and the antennae/rope.
- For the last cut, trim about two inches off the long edge of the top/hoodie piece that you just cut from the main body of the sleeping bag. Look at the pictures below to see what you should end up with.
Step 2: Pinning and Sewing the Body
Fold under and pin any raw edges that have just been cut and sew along the edge so that they won't unravel (if you have a surger you can just serge these edges.)
2. Sew Edges Together
Fold the body piece so that the edges are lined up and it is inside out. Figure out how far you zipper will go down on the side by laying out the body piece with the hoodie and zipper (see the third picture below). Mark the end the zipper with a pin. Sew the open bottom and side edges together, leaving from the pin till the top edge open for the zipper. If you want this to be a Halloween costume simply do not sew the bottom edges together.
3. Round Bottom Corners (opt.)
To give the creature a more caterpillar look you can sew rounded bottom corners, making sure to keep the bag inside out while sewing.