i hated this in school! and i hated telling people know so what i did is: 1. i’d buy really crummy pencils or pens so i didn’t have to worry about them being lost or etc. 2. i’d get custom pencils that said really mean things like “i’m a mooch” , ” i’m a douche bag” ” i like to lick dog anus ” this one worked the most because no one wanted to borrow these haha 3. start charging $.50 or whatever per writing instrument or whatever. 4. tell them you only have supplies for you, which isn’t lying because it is for you. 5. if you’re in class raise your hand and let the teacher know that person doesn’t have a pen or pencil. yeah you may come off harsh but that person will be embarrassed and i’m sure they won’t ask for one from you again. 6. have them ask someone else. srsly, i could go all day!