This is just a list of AWS CLI commands that may come in handy. Listed here just to streamline the presentation.
aws iam delete-user --user-name tech-tuesday
aws ec2 delete-key-pair --key-name cloud_workstation
aws iam list-access-keys --user-name tech-tuesday --query AccessKeyMetadata[0].AccessKeyId --output text
aws iam update-access-key --access-key-id $(aws iam list-access-keys --user-name tech-tuesday --query AccessKeyMetadata[0].AccessKeyId --output text) --status Inactive --user-name tech-tuesday
aws iam delete-access-key --access-key-id $(aws iam list-access-keys --user-name tech-tuesday --query AccessKeyMetadata[0].AccessKeyId --output text) --user-name tech-tuesday
aws iam delete-access-key --access-key-id $(aws iam list-access-keys --user-name tech-tuesday --query AccessKeyMetadata[0].AccessKeyId --output text) --user-name tech-tuesday && SECRET=$(aws iam create-access-key --user-name tech-tuesday | jq '.AccessKey.SecretAccessKey') && KEY=$(aws iam list-access-keys --user-name tech-tuesday --query AccessKeyMetadata[0].AccessKeyId --output text) && echo -e "[myterraform]\naws_access_key_id = $KEY\naws_secret_access_key = ${SECRET:1:-1}" > ~/.aws/credentials
aws ec2 delete-key-pair --key-name cloud_workstation && rm -f ~/cloud_workstation.pem && aws ec2 create-key-pair --key-name cloud_workstation --query 'KeyMaterial' --output text > ~/cloud_workstation.pem && chmod 400 ~/cloud_workstation.pem