Lol get something that is super convenient but not necessary to have like a set of ratcheting wrench. Next time he wants to borrow tell him to buy it himself.
i'll kidnap him and bring him to a Mumbai industrial estate and when he's gasping for clean air i will put on my gas mask hooked up to a tank filled with air harvested from Swiss mountains.
he sees me breathing next level fresh air and when he asks if he could take a puff i'll say : gEt yOuR oWn