I just found this GREAT uncluttering blog called unclutterer.com. It provides daily tips on decluttering. (Why they didn't call it declutterer.com is beyond me.)
The tip for the day concerns those big bulky wallets people end up carrying around (like my husband). Is it really necessary to have so many cards in your wallet? The blog post suggests keeping another wallet in your glove compartment to hold your loyalty cards. You can just grab the relevant card when you need it that way.
I actually like the suggestion one of the commenters has: punch a hole in each card and thread them on a keychain, and keep that in your glove compartment instead. Others take photos of their cards and store them in an iPhone app. These are all creative ideas to declutter your wallet.
1 week ago