Funnily enough, the flags used on the moon were nothing special, one of the engineers was tasked to find a way to make the flag appear raised as there was no wind to make it flutter. He basically went to K Mart (or Wall Mart) bought ten flags, got his missus to re sew the edges so he could slide an aluminium pole along it to keep the flag up and his design was so good and cheap that they just took the flag, modified, but as is from K Mart.