That is a really good idea. I need to find a space pen with a hole in it.
I have a handy-dandy mini-wallet kind of thingy that holds all the freakin’ key-ring size loyalty cards, CVS among them. Saves me oodles of purse fumbling.
On, and I have a little brass jingle bell on there, too. If my keys aren’t in my purse, I can give one of my coats a shake and tell if the keys are in the pocket.
Thumb drive, 6 keys, Exxon Speedpass, Barcode tags from Petco, Spec’s, and Borders. ( I guess I can ditch that last one now.)
Fenix E01 flashlight, Leatherman Squirt and a threaded mast pin off my first sailboat.
A house key and nothing else.
How do you guys sit in a chair comfortably with all that crap on your key ring sitting in the front pocket of your jeans?
Isn’t it. 
I got mine as a gift when donating blood. It has a screw on cap with a ring in it, so all I have to do is unscrew it. It’s about half the length of an average pen, and slightly thinner.
For a long, long time I kept my keyring on a snap hook, which I actually used to clip my keys to a belt-loop on my pants and then tuck the keys themselves into my back pocket.
Now the only thing on my keyring besides keys is my brass key fob from the 2000 All-Star Game.
A knife that I mostly use for opening boxes and a flat four screwdriver thing that came with my screwdriver set. The rest is keys.
CVS can and will look you up by phone number, so you can just ditch the card. My girlfriend has one of those, and on the odd occasion that I’m shopping at CVS without her, I just give them her phone number.
Nothing. There are 4 keys and that’s all.
I’ve got the house keys, keys for both my car and my husband’s, keys to his parents’ place, a small LED light, and a Montreal Canadiens keychain. The LED thing comes in handy when the porch light is out (often) and I can’t see where to stick the key. I can’t think of what else I’d want on there - I’d never use a bottle opener or screwdriver, and if I had a knife I’d find a way to cut myself and/or forget to take it off and get it confiscated at the airport.
I keep all of my loyalty cards on a second keychain that I keep in a small inner pocket of my purse. They got annoying very quickly on my regular keychain. I use my old phone number at my regular grocery store, but I can’t keep track of which fake number I gave to which store, so I keep the little cards.
Giant (the chain grocery, not the adjective meaning “really big”) card. My keychain has only my car keys, a key to a car my parents no longer own, and a key to their side garage door. My apartment keys are on another ring, which is kind of dumb, but hey, that way I might only lose half of them. Plus my apartment has four keys (lobby door, door knob, deadbolt, mailbox) and they came with a little holder for my laundry card which is convenient so I never changed it.
A metal tag which says “CAPTAIN.”
In my pocketses I carry a small multitool with a LED light, a swiss army knife, a 10x jeweler’s loupe, and a pocketwatch. All seperate. But really only keys on the keychain
Five keys and a brass key tag I got with a carton if cigarettes 30 years ago that says"You’ve come a long way, baby." I’ve also got a tiny cellphone charm that a friend brought back from China because my cellphone doesn’t have a spot to attach a charm.
I have several keys, my remote opener, a pretty enameled medallion I won at a Gordon Setter club specialty dog show, a keyring that is a miniature retrieving dumbbell, and a fob I made MANY years ago from beads and leather thong.
keys to the house, car, divemaster’s and sister’s places, a tiny LED flashlight that throws an amazing amount of light for something so small, a bottle opener (blue moon logo, of course), keytags for marsh, kroger and the local library, a kick-your-ass-into-next-week-barely-legal pepper spray cannister, and last but not least, a minature eiffel tower - straight from paris - courtesy of a pal who traveled there a year ago.
Not counting keys, a Swiss army knife, flashlight, four or five of those plastic discount thingies, a wooden disk with a view of the Hopewell rocks laser carved into it.
My other key ring has two flash drives and another flashlight.
Car fob and house key.
One of those clamp things, for climbing.
i have a doggie collar key ring. there is a loop of leash, seahorses on a blue backround attached to the ring. on the ring is keys and a security key fob, and han solo.
i couldn’t resist the han solo key chain…
i have a separate key chain for all the store cards. after working at cash wraps i’ve seen way to many people leave their keys behind.