The most challenging part of chaple was writing skits because my group was not foucusing. The most rewarding part was right after my duet because I was really nervous and felt so good after.
I think cargoBot is fun, challenging, and a brain teaser. I think it improves your thinking skills by getting you to take something, turn it around and try it again. If I were to give a hint for cargoBot I would recommend using the colored flags to help you.