Another great way to make money at school is to sell school supplies. Most of the kids in the school will have the necessary school supplies, but many will want something more unique.
Selling stickers is another great way to make money at school. They are one of the simplest things to sell because they take up very little space and can be sold anywhere.
You can build an excellent little business if your school allows locker decorations and accessories. The best way to start this is to let people order locker decorations for birthdays or special occasions.
Kids love slime. Slime is fun, can be made in several colors, and is easy to package individually. Most slime is made quickly and easily with basic ingredients.
Tie-dye is still a popular thing that kids and adults love. Making a tie-dye shirt is not challenging, and you can get a pretty good idea of the sizes you will need based on the school you go to.