Hey, welcome to the site!
I hope this isn't too easy nor too hard for you. I don't know what you've done before so I'll just give you a basic dare. Strip naked, and do 10 jumping jacks in every room of your house. If you want to make it challenging, you can set a limit of 3 minutes or so. Your 'punishment' could be putting toothpaste on your nipples.
Hope it's good enough!