One quick and simple way is letting them wear their hair out and just dress it up with accessories.
I'm pretty sure you all know how much I love protective styles. I know a few do not like to let their child wear their hair out because it becomes a tangled mess by the end of the day. A protective style during school is perfect because it requires less fuss and you can keep it in for days at a time. Even weeks if styles last long on your little one. My favorite types of protective styles are the ones where you can change it after a few days to give it a new look. One I personally love is mohawks! One day you can braid all the braids together like this:
Hereis a post of a 4-in-1 style I did recently .Here is another link showing the style switched up many times. You can also add beads or barretes on the end if you dont mind. Check back in a few for some quick and easy styles we come up with!