Port Protector (Lightning and 3.5 headphone)

So I've been seeing a lot of dust that's accumulated inside both my Lightning pin port and my 3.5 headphone connector port (from pocket lint) and have come here to see what you guys do to prevent this. Do any of you use any special accessories or a home made invention? (ex: http://www.radtech.us/products/portectorz , I don't want to spend $10 plus shipping.)