1. A shower caddy can keep all of your engine fluids in place.
2. Create this bag dispenser so you can be ready for just about anything.
3. Suction cup shower organizers can keep little items in place.
4. Put silicone cupcake wrappers in your cup holders for easy clean-up.
Because nothing in the world is as grimy as an old cup holder. Here is a set of 24 for $6.