early education activities, kids crafts, and books. Flag Day Activity For Kids. Today is Flag Day and instead of sitting inside and crafting stars and stripes we are running and searching all over our yard for them. This Flag Day activity for kids is as simple as it gets but fits perfectly with the special day. After playing we talked about the flag, it’s evolution and what flags are for. I plan on repeating this many times leading up to 4th of July as well. Gather your materials. You will need a container and some flags.