Diy Ernie Costume . 18 terrible halloween costumes that will genuinely give you nightmares. Basically i just took a bald cap and cut a small hole in the top. Found on Facebook Marketplace These homemade Bert and Ernie costumes from www.reddit.com 5 out of 5 stars (335). Using the right color felt, we attached to the. His best friend, after ernie, is his pet pigeon, bernice.