The Brownie Girl Scout Way Step 3 requirement includes an option to make a "team mural, collage, flag or other artwork". I jumped right onto this one and decided that making a troop flag would b oh-so-cool. We've had camp outs in the past where each troop brought their own flag and posted it outside their campsite. It was really cool to go from site to site and see their flags and learn more about the girls who made up their troop. Now, if you want to make a flag for your troop, there is a super simple step-by-step guide over at WikiHow that will walk you through it.
Another fun option for this would be to make a troop banner. These are especially great if your troop does a lot of parades (which can fulfill a requirement for the Celebrating Community badge). So, what's the difference between making a flag and making a banner? Well, really it's the placement of your pole. If you make a flag the pole goes down the left hand side and it's carried like the American flag. If you make a banner, the pole goes along the top and it's carried by each end. The image below shows you the difference between the two. Either set up will complete this badge requirement, so just make the one your troop will get the most use out of.