Re: hoping no question is dumb lol
Before I broke down and bought those little plastic things, actually they came free with an inner tube I bought, I used to use the blades from a model airplane propeller. Not the wooden ones, although they might work too, I used the carbon fiber props, big ones made for the quater scale size engines. Dull the edges a little so they aren't sharp and they made great, nearly unbreakable, easily stored, tire/tube tools.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"