Have you ever wanted to just have some basic things, but not wanted to lug things around like backpack. Well you can now. This design is called the mini back pack. It includes an abacus for simple math calculations, a card holder for credit cards debit card and other assorted wallet things, it also includes a phone stand with multiple angles for your veiwing pleasure, a ruler with metric measurments, a pencil and two usb holders. If this isn't enough for you than I don't know what else I could add without making it bigger then a pocket sized peice of equipment. The whole point of this is to in some small way release some stress and weight off the back of the children and students using this. Thsi would mainly be for the younger grades of about 3rd to 5th grade. Students should be able to learn measuring skills as well as the ability to use an abacus for more basic equations. This was made to use alongside the usual school materials list.