i personally use a small carabiner type keychain that I made out of a home depot hook for like a dollar. I have all my keys on it and just take off the car key whenever I drive.

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Vehicles:

1. 2005 4.8is X5 Sapphire Black Metallic/Black Leather, fully loaded (Nav, Comfort Seats, Rear Climate, Sliding Load Floor, Heated Front and Rear Seats, Aux In)
2. 2004 3.0i X5 Jet Black/Black Leather (Lemoned)
3. 1999 Saab 9-5 Turbo (Trade In/Retired)


My Custom X Page (Pics of my 4.8is)