Here are some costume ideas almost as comfortable as regular clothes, and super easy to create to boot!

This charming costume takes almost no time to make. It’s especially fun for those who enjoy getting the people around them hissssterical!
A black shell
Black pants or skirt
A Melissa and Doug stuffed snake
Measure the snake against your child’s arm by placing the head of the snake just beyond the child’s fingertips.
At the spot that the snake reaches your child’s shoulder, cut a slit on the underside of the snake that’s wide enough for the child’s arm to fit in.
Remove the stuffing from the slit until the head of the snake, leaving the head stuffed.
Have your child put his arm into the space you took the stuffing out of, and wrap the rest of the snake loosely around your child’s body. It should be roomy enough for your child to be able to slip the snake on and off over his head. Ideally, the end of the snake should hit at or above the waist so your child can sit comfortably.
Use the hot glue to glue the coiled snake into that position.