We used flat fabric paint...make sure all the kiddos are wearing clothes you don't mind trowing out afterwards as this stuff obviously wont wash out! It didn't occur to me to do this as well...I'll really miss that tank top now that I have fabric paint miscellaneously placed about. At least now mom has a art/painting top like the girls do! As you can see with the 2 middle hand pints that its important to have the shirt flat to avoid any creases. This paint dries fast so you'll want to have a little dish on hand to re-apply.
Its a super easy program. As a homeschooler I have an issue with conformity, but still like to see it so I can change it to suite my family. The Discovery Scouts just provides the outline of projects (like ideas) and supply you with the badges. Its totally up to the parents as to when their kiddo earns the badge. I carried that idea over to my homeschooling group.
We are starting with the Outdoor Living badge. We'll begin with hiking, then work our way into our Jr. Ranger Program. Most National Parks offer this.