Everything you touch is gross. Here’s how to clean it. All of it.
Your toothbrush.
The Why
Although the American Dental Association says that "evidence is lacking that bacterial growth on toothbrushes will lead to specific health problems", that doesn't mean you shouldn't keep it clean. Mythbusters confirmed that there's fecal matter on there, so keep it clean.
The How
Livestrong says to keep your toothbrush isolated, out of closed containers (which can cause more bacterial growth), and to store it upright.
Your contact case.
The Why
Ever seen pinkish stuff on your lens case? That's mildew, that can cause eye infections. The American Optometric Association found that 65% of people don't replace their case every 3 months, as recommended.
The How
Besides replacing the case every 3 months, you should rinse your case off every morning after you put your lenses in using your sterile contact lens solution.