Goal and options: What type of box do you use for the Riddler Device creation?
output answer: You should search a home improvement supplies store such as Home Depot. Also you can go to a retail store but look for a box that is big enough to fit on the back.

Goal and options: kitchen towel
output answer: can be cut with hedge clippers

Goal and options: How to fasten a makeshift namebadge?
output answer:
Write your name on a scrap piece of paper and use a safety pin to fasten it to your sweater