House key (no car)
Hook to hang keychain from purse, decorated with a yin/yang symbol
Gym membership tag
Mini library card
Mini discount cards for grocery store and beauty supply store
flat PVC Naruto figure from Hot Topic
256 megabyte flash memory drive - not one that I use often, (because frankly, it’s not fun to have your keys hanging onto the computer,) but a ‘just in case’ backup. 
Souvenir decoration I bought at San Francisco in November.
Car key, office front door, office back door, post office box and a circa 1965 Army dog tag (full name, service number, last rights preference and blood type). No house key because we seldom lock the house – that’s a nice thing about living in the sticks.
a small red LED (red won’t mess up your nightvision)
a large solid metal high heel from the shoe museum in Toronto
5 keys: my house, work, my parents’ house, my grandparents’ house, my ex-husband’s parents’ house. Probably should return that last one.
I’ve also heard about heavy keys damaging ignitions. Luckily, my car has a SmartKey, which I thought was ludicrous when I bought it. My car key is always in the inner pocket of my purse. 
The massive laundry pin that I mentioned in the purse thread
A silver, two headed screwdriver (one side phillips, one slot head)
LED flashlight
My RL name carved into wood
Battery cap removal tool for an Animas insulin pump
Keys
LED light. Small Swiss Army knife. Massive VW fob. Too many keys (7ish). All on a Columbia lanyard.
A flash memory drive and a fob from ''Äramco Loss Prevention".
I have a mini flashlight, a pink lego brick keychain, and keychain LEGO minifigure versions of Harley Quinn and Boba Fett. Oddly enough, I only have a house key on it.
A P38 can opener. – a remarkably handy thing to have. I use double-sided tape to keep it from opening until I need it.
Also, 7 keys and the car remote.
Keys. It’s called a keyring for a reason; it’s not a junk-ring.
My Rabbitohs members badge.
Ah boo. Aren’t you a party pooper? 
Aside from keys, I have the following things on my keychain
Spyderco Stainless Steel Ladybug3 (serrated blade) keyring knife
Inka Pen with Fisher Space Pen refill
Arc AAA DS flashlight
Not to pry…but this struck me as kinda odd.
Care to explain?
Besides keys, all I have are member cards…one for my library, one for Borders, one for Office Depot, and then one that I use at my grocery store that’s supposed to donate money to a local school district.
My keys say rather more than I would like them to about me.
I have the keys to my home and car, a personal alarm and torch, a cute owl and a Laerdal disposable airway (to avoid actually giving mouth-to-mouth in a resuscitation scenario), and one of those tokens shaped like a pound coin that you use for shopping trolleys.
Yes, I am that much of a girl-scout- prepared for every worst-case scenario.
Manx TT ‘thing’
Orange thing to hold the ancient egyptian remains of my shopright clubmann card.
Led torch.
Micro-sd card reader.
Lacie Key.
A clip think to enable me to seperate the car keys from the rest.
And some keys.
Three interlinked rings with eighteen keys used for four vehicles, my house, my parent’s house, various doors and cabinets at work, and a disk-style spark plug gapper. I carry the remote-fob key for the car of the moment also, but the spare’s in with the eighteen in case I need it.
I have my keys of course. I have a souveneir from Sea World that has sharks on it (gift). I used to have a cool combination bottle opener/LED light in the shape of a shark. Kinda like this one Stainless+steel+shark+bottle+opener+key+ring - Find it at Shopwiki
The little wire piece got stretched and I need to take some pliers to it and reattach it. The flashlight comes in handy a lot. (The bottle opener too, but only when I’m not going to use the keys for the car anytime soon!)
I love sharks and whenever anyone can find something to get me, they get it.
A mini pry bar, gov issue tweezers and 2 keys.