Ditto, find out how much of that junk you don't need! My car (Cadillac STS) uses the Fob for ignition (no key needed). I carry that and a house key (in case power is out/garage door opener doesn't respond). Try to keep my wallet as slim as possible. I keep a 2nd wallet in the house with all the stuff I "need" but not on a regular basis, then if I'm going on a trip or whatever I can load up my normal wallet with specific stuff.

Wallet, pocket knife, and 1 key fob. that's it! Oh and phone goes on a belt holster.